OPTICAL FIBERS
Features:••••

Huge variety of fibers available from stock
Fibers for wavelengths from 200nm to over 2000nm
Multimode, singlemode, polarization maintaining, andlarge mode area fibers
Available uncabled and precabled

Applications:••••

Telecommunications
Life Sciences and biotechnology
Industrial
Sensing

Product Description:

250 micron OD FiberOZ Optics stocks a wide variety of optical fibers suitablefor variety of applications these fibers come in a variety offiber sizes operating wavelengths and fiber types, and canbe assembled into patchcords or more complex fiber optic
components to suit your needs. OZ Optics categorizes ourfibers based on fiber type, operating wavelengths, core/cladding size, jacket diameter, and numerical aperture(NA). The fibers can be categorized as follows:
Multimode fibers: Multimode fiber have large fiber coresizes and large numerical apertures, making them well
suited for collecting light from large or diffuse sources suchas LEDs or white light lamps. They are also well suitedfor high power applications as the power is transmitted
through a large cross section compared to singlemode orpolarization maintaining fibers. The drawback with multimode fibers is that they do not maintain the high quality
spatial properties of lasers. Instead the light is dispersed
among multimode modes within the fiber, generating an out
speckle pattern when the light emerges from the other endof the fiber.

900 micron OD Fiber

Typically these fibers are suitable either for near infraredand visible wavelengths (IRVIS fibers) or for near ultraviolet and visible wavelengths (UVVIS fibers). UVVIS multimode fibers typically are built with added amounts of hydroxyl (OH) ions added to enhance ultraviolet transmission
at the expense of infrared transmission. Multimode fibers
can be further classified as follows:
Graded-Index multimode fibers (MMF): These fibers
have a fiber core with a refractive index that varies
from the center to the edge. They are mainly used fortelecommunications applications, and come in threestandard core/cladding sizes - 50/125, 62.5/125, and100/140.
3mm OD Cabled Fiber
DTS0135

OZ Optics reserves the right to change any specifications without prior notice.

28 January 2014

1

Step-Index silica core (QMMF) fibers: These fibers have a fiber core with a constant index of refraction. Typically the fibercore is fused silica, doped with an element like germanium, while the fiber cladding is typically undoped fused silica for fibers
with numerical apertures up to 0.22, and typically a hard polymer for higher numerical apertures. These fibers are available
with core sizes ranging from 10 microns to 1500 microns, and NAs ranging from 0.12 to 0.5.

Table 1: Standard Graded Index Multimode Fibers1
Bar CodePart Number

OperatingWavelength Range(nm)

Core Diameter(ȝm)

Cladding
Diameter (ȝm)

Attenuation (dB/km)

Numerical Aperture2

Jacket or Buffer
Diameter (mm)16149

MMF-IRVIS-50/1250.25-L

400 - 1800

50 ± 3125 ± 2d2.5 dB @ 850 nm
d0.8 dB @ 1300 nm

0.200 ± 0.015

0.25

1235

MMF-IRVIS-50/125-1-L

400 - 1800

50 ± 3125 ± 2d2.5 dB @ 850 nm
d0.8 dB @ 1300 nm

0.200 ± 0.015

0.9

0.200 ± 0.015

3.0

1236

MMF-IRVIS-50/125-3-L

400 - 1800

50 ± 3125 ± 2d2.5 dB @ 850 nm
d0.8 dB @ 1300 nm

3715

MMF-IRVIS-62.5/
125-0.25-L

400 - 1800

62.5 ± 3

125 ± 2d3.0 dB @ 850 nm
d0.7 @ 1300 nm

0.275 ± 0.015

0.25

1237

MMF-IRVIS-62.5/
125-1-L

400 - 1800

62.5 ± 3

125 ± 2d3.0 dB @ 850 nm
d0.7 @ 1300 nm

0.275 ± 0.015

0.9

1238

MMF-IRVIS-62.5/
125-3-L

400 - 1800

62.5 ± 3

125 ± 2d3.0 dB @ 850 nm
d0.7 @ 1300 nm

0.275 ± 0.015

3.0

1240

MMF-IRVIS-100/
140-1-L

400 - 1800

100 ± 3140 ± 4d6.0 dB @ 850 nm
d3.0 dB @ 1300 nm

0.29 ± 0.02

0.9

1241

MMF-IRVIS-100/
140-3-L

400 - 1800

100 ± 3140 ± 4d6.0 dB @ 850 nm
d3.0 dB @ 1300 nm

0.29 ± 0.02

3.0

Notes:
1
2

Corning graded index fibers used for 50/125, 62.5/125, and 100/140 fiber sizes.
According to Corning's definition of the numerical aperture for graded index multimode fibers (EIA/TIA-455-177A), when all modes are uniformly excited in graded index
multimode fiber, then the intensity of the output light is 5% of the center intensity at the angle whose sine equals the numerical aperture. This is the definition used for ourcoupler, collimator, and focuser calculations when using these fibers. Assuming that the overall intensity pattern (i.e., ignoring modal noise) is Gaussian in behavior, we
can calculate the Gaussian beam size as 81.7% the size calculated from the numerical aperture.

Table
Table 2:
4: Standard
Standard Step
Step Index
IndexMultimodeMultimodeFibers
FibersFor
ForVisible
VisibleAnd
AndUltraviolet
UltravioletWavelengths
Wavelengths
Jacket or
BufferNumerical
Aperture Diameter
(mm)

Core
Wavelength
Diameter
Range (nm)(ȝm)

Cladding
Diameter
(ȝm)

Other
Coatings(ȝm)

Attenuation(dB/km)1

QMMF-UVVIS-10/125-0.25-L

180 - 900

10 ± 2125 ± 3N/A<100 @380-870 nm

0.10

0.25

Fused Silica

1251

QMMF-UVVIS-25/125-0.25-L

180 - 900

25 ± 4125 +3/-0

N/A<100 @380-870 nm

0.10

0.25

Fused Silica

1259

QMMF-UVVIS-50/125-0.25-L

200 - 900

50 ± 1125 ± 3N/A<100 @300-900 nm<1000 @220-300 nm

0.22

0.25

Fused Silica

0.12

0.25

Fused Silica

Bar
Code

Part Number

1247

Cladding
Material

1253

QMMF-UVVIS-50/125-0.25-L-NA=0.12

200 - 900

50 ± 1125 ± 3N/A<100 @300-900 nm<1000 @220-300 nm

1474

QMMF-UVVIS-50/125-1-L

200 - 900

50 ± 1125 ± 3N/A<100 @320-900 nm<1000 @220-320 nm

0.22

0.9

Fused Silica

0.22

3.0

Fused Silica

1257

QMMF-UVVIS-50/125-3-L

200 - 900

50 ± 1125 ± 3N/A<100 @300-900 nm<1000 @220-300 nm

1271

QMMF-UVVIS-100/140-0.25-L

200 - 900

100 ± 2140 ± 3N/A<100 @300-900 nm<1000 @220-300 nm

0.22

0.25

Fused Silica<100 @380-900 nm<1000 @250-380 nm

0.22

0.375

Fused Silica

0.22

0.53

Fused Silica

0.22

0.73

Fused Silica

0.22

0.64

Fused Silica

0.22

0.75

Fused Silica

0.22

1.2

Fused Silica

0.22

1.08

Fused Silica

0.22

1.4

Fused Silica

1287

QMMF-UVVIS-200/240-0.4-L

200 - 900

200 ± 5240 ± 5Hard Coat
260 ± 527638

QMMJ-UVVIS-300/330-0.53-L

200-900

300 ± 6330 ± 7

Buffer430 ± 13<100 @ 300-900 nm<1000 @ 220-300nm

1294

QMMF-UVVIS-365/400-0.73-L

200 - 900365 ± 10400 ± 1027639

QMMJ-UVVIS-400/440-0.64-L

200-900

400 ± 8440 ± 91793

QMMF-UVVIS-550/600-0.75-L

200-900

550 ± 12600 ± 102838

QMMF-UVVIS-600/660-1.2-L

200-900

600 ± 12660 ± 1327640

QMMJ-UVVIS-800/880-1-L

200-900

800 ± 16880 ± 181302

QMMF-UVVIS-940/1000-1.4-L

200-900940 ± 151000 ± 15

Hard Coat
425 ± 10
Buffer540 ± 16
Hard Coat
630 ± 10
Buffer810 ± 25
Buffer980 ± 30
Hard Coat
630 ± 10<100 @380-900 nm<1000 @250-380 nm<100 @ 300-900 nm<1000 @ 220-300nm<100 @380-900 nm<1000 @250-380 nm<100 @300-900 nm<1000 @220-300 nm<100 @ 300-900 nm<1000 @ 220-300nm<100 @380-900 nm<1000 @250-380 nm

Notes:
1

The attenuation of these fibers is highly wavelength dependent. For detailed attenuation versus wavelength data contact OZ Optics.

2

For maximum power handling, the input light must be focused such that the focused spot size is about 70% of the fiber core size, while the NA of the focused rays should
be between 30% and 90% of the NA of the fiber. We strongly recommend using high power, air gap design connectors for very high power coupling applications.

3Power handling for pulsed laser light is dependent on the pulse energy, duration, and wavelength. Contact OZ for power handling for pulsed laser applications.

4

While OZ Optics believes this information to be reliable, it is only provided as a general guide, and can be greatly affected by individual circumstances. OZ Optics offers
no warranties as to its accuracy, and disclaims any liability in connection to its use.

2

Table 3: Standard Step Index Multimode Fibers For Infrared And Visible Wavelengths
Bar
Code

Part Number

Wavelength
Range (nm)Core
Diameter(ȝm)

Cladding
Diameter(ȝm)

Other Coatings(ȝm)

Attenuation(dB/km)1

Numerical
Aperture

Jacket or
Buffer
Diameter(mm)

Cladding
Material

13460

QMMF-IRVIS-50/125-0.3-L

350-2400

50 ± 2125 ± 3N/A

20dB peak @1390 nm<10 @630 - 1800 nm

0.22

0.3

Fused Silica

1260

QMMF-IRVIS-50/125-1-L

500 - 2100

50 ± 3125 ± 3

N/A

<10 @ 600 - 1200 nm<100 @ 500 - 2100 nm

0.2

0.9

Fused Silica

1263

QMMF-IRVIS-50/125-3-L

350 - 2100

50 ± 2125 ± 3N/A

20dB peak @1390 nm<10 @ 630 - 1800 nm

0.22

3.0

Fused Silica

1268

QMMF-IRVIS-100/140-0.25-L

350 - 2100

100 ± 2140 ± 3N/A

20dB peak @1390 nm<10 @630 - 1800 nm

0.22

0.25

Fused Silica

0.37

0.50

Polymer1282

QMMF-IRVIS-200/230-0.5-L

500 - 1500

200 ± 4230 +0/-10

N/A

d20 @ 530 - 1100 nm
29 @ 1300 nm

1283

QMMF-IRVIS-200/230-3-L

500 - 1500

200 ± 4230 +0/-10

N/A

d20 @ 530 - 1100 nm
29 @ 1300 nm

0.37

3.0

Polymer1288

QMMF-IRVIS-200/240-0.4-L

400 - 2100

200 ± 5240 ± 5Hard Coat 260 ± 5<10 @630 - 1900 nm

0.22

0.4

Fused Silica

1289

QMMF-IRVIS-200/240-3-L

400 - 2100

200 ± 5240 ± 5Hard Coat 260 ± 5<10 @630 - 1900 nm

0.22

3.0

Fused Silica

0.37

0.65

Polymer

0.22

0.73

Fused Silica

0.37

0.73

Polymer

0.22

0.64

Fused Silica

0.22

0.75

Fused Silica

0.37

1.04

Polymer

0.37

3.0

Polymer<10 @630 - 1900 nm

0.22

1.40

Fused Silica

d20 @ 530 - 1100 nm
29 @ 1300 nm

0.37

1.40

Polymer2512

QMMF-IRVIS-300/330-0.65-L

500 - 1500

300 ± 6330 +5/-10

N/A

3297

QMMF-IRVIS-365/400-0.73-L

400 - 2100

365 ± 14400 ± 8Hard Coat 425 ± 10

1809

QMMF-IRVIS-400/430-0.73-L

500 - 1500

400 ± 8430 +5/-10

N/A

2739

QMMF-IRVIS-400/440-0.6-L

350 - 2100

400 ± 8440 ± 9Buffer 540 ± 17

1298

QMMF-IRVIS-550/600-0.75-L

400 - 2100

550 ± 12600 ± 10

Hard Coat 630 ± 101299

QMMF-IRVIS-600/630-1-L

500 - 1500

600 ± 10 630 +5/-10

N/A

1300

QMMF-IRVIS-600/630-3-L

500 - 1500

600 ± 10 630 +5/-10

N/A

1790

QMMF-IRVIS-940/1000-1.4-L

400 - 2100

940 ± 151303

QMMF-IRVIS-1000/1035-1.4-L

500 - 1500

1000 ± 15 Hard Coat 1035 ± 151000 ± 15 1035 ± 15

N/A

d20 @ 530 - 1100 nm
29 @ 1300 nm
20dB peak @1390 nm<10 @630 - 1800 nm
d20 @ 530 - 1100 nm
29 @ 1300 nm
20dB peak @1390 nm<10 @630 - 1800 nm<10 @630 - 1900 nm
d20 @ 530 - 1100 nm
29 @ 1300 nm
d20 @ 530 - 1100 nm
29 @ 1300 nm

Notes:
1

The attenuation of these fibers is wavelength dependent. For detailed attenuation versus wavelength data contact OZ Optics.

2

For maximum power handling, the input light must be focused such that the focused spot size is about 70% of the fiber core size, while the NA of the focused rays should
be between 30% and 90% of the NA of the fiber. We strongly recommend using high power, air gap design connectors for very high power coupling applications.

3Power handling for pulsed laser light is dependent on the pulse energy, duration, and wavelength. Contact OZ for power handling for pulsed laser applications.

4

While OZ Optics believes this information to be reliable, it is only provided as a general guide, and can be greatly affected by individual circumstances. OZ Optics offers
no warranties as to its accuracy, and disclaims any liability in connection to its use.

Singlemode fibers: Singlemode fibers have core sizes small enough that only one single path exists in the fiber for the light totravel. As a result they maintain the high spatial coherence and constant Gaussian profiles of high quality lasers. This makes
them ideal for many applications where the goal is to generate a high quality beam or focused spot. However the output polarization of the light from the fiber will change as one bends, twists, squeezes or change the temperature of the fiber. They do notpreserve polarization.
Singlemode fibers have an operating wavelengths determined by their cutoff wavelength and core diameter. At wavelengths
shorter than the cutoff wavelength the fiber is no longer singlemode in nature and instead starts to act like a multimode fiber,
generating a beam that is not Gaussian and that changes as one bends the fiber. At long wavelengths the core becomes too
small to trap the light well. The transmission becomes more and more sensitive to bending the fiber and eventually the light is
no longer transmitted by the fiber. OZ Optics offers special broadband RGB singlemode fibers for visible light applications, able
to transmit light from 400nm to 650nm.
Standard singlemode fibers (SMF) normally have a germanium doped core with a pure silica cladding. For wavelengths shorter
than 600nm we instead use fibers with a pure fused silica core with a fluorine doped cladding (QSMF fibers).

3

Table 4: Standard Singlemode Fibers
Bar
Code

1197
14579
1202
1204
17333
10106
10108
1215
1217

Part Number

QSMF-3202/125-0.25-L5
QSMF-4003/125-0.25-L5
QSMF-4883.5/125-0.25-L5
QSMF-4883.5/125-3-L5
SMF-633-4/
125-0.25-NF-L
SMF-633-4/
125-1-L
SMF-633-4/
125-3-L
SMF-780-5/
125-0.25-L
SMF-780-5/
125-3-L

OperatingWavelength
Range1 (nm)CutoffWavelength
(nm)2

Core
Diameter(ȝm)

Cladding
Diameter(ȝm)

Mode Field
Diameter (ȝm)

Attenuation(dB/km)Numerical
Aperture(Manufacturer's Specs)3

320-400<300

2±1

125 ± 32.2 (Typical)

200 @ 340 to
360 nm0.12 ± 0.03

400-450<380

2.5/3.0

125 ± 24.0 (Typical)<60 @ 400 nm

0.10 ± 0.01

450-650<4403.5 ± 0.5

125+3/-1

4.2 (Typical)<30 @ 488 nm

0.11 ± 0.015

458-650<4403.5 ± 0.5

125 +3/-1

4.2 (Typical)<30 @ 488 nm

0.11

600-850<600

4125 ± 24.0 ± 0.5

<12

0.13

630-850<620

4.0

125 ± 24.0 ± 0.5

<12

0.12

630-850<620

4.0

125 ± 24.0 ± 0.5

<12

0.12

780-980<770

4.9

125 ± 15.4 ± 1.0

<4

0.11

780-980<770

4.9

125 ± 15.4 ± 1.0

<4

0.11

Effective
Numerical
Aperture(1/e2)3
0.093 @
320 nm
0.065 @
400 nm
0.074 @
488 nm
0.074 @
488 nm0.10 @
633 nm0.10 @
633 nm0.10 @
633 nm
0.092 @
780 nm
0.092 @
780 nmJacket or
Buffer
Diameter
(mm)4
0.25
0.25
0.25
3.0
0.25
0.9
3.0
0.25
3.0

1224

SMF-1060-6/
125-0.25-L

980-1550

<970

6.0

125 ± 0.5

5.9 ± 0.3 @980 nm
6.2± 0.3 @1060 nm2.1 @ 980 nm
1.5 @ 1060 nm

0.14

0.11 @
1060 nm

0.25

1230

SMF-13009/125-0.25-L6

1290-1650

<1260

8.2

125 ± 0.7

9.2 ± 0.4 @1310 nm10.4 ± 0.8 @1550 nm<0.22 @
1310 nm<0.35 @
1550 nm

0.14

0.090 @
1300 nm0.095 @
1550 nm

0.25

1232

SMF-13009/125-1-L6

1290-1650

<1260

8.2

125 ± 0.7

9.2 ± 0.4 @1310 nm10.4 ± 0.8 @1550 nm<0.22 @ 1310 nm<0.35 @ 1550 nm

0.14

0.090 @
1300 nm0.095 @
1550 nm

0.9

11788

SMF-13009/125-2-L6

1290-1650

<1260

8.2

125 ± 0.7

9.2 ± 0.4 @1310 nm10.4 ± 0.8 @1550 nm<0.22 @ 1310 nm<0.35 @ 1550 nm

0.14

0.090 @
1300 nm0.095 @
1550 nm2.0

2749

SMF-13009/125-3-L6

1290-1650

<1260

8.2

125 ± 0.7

9.2 ± 0.4 @1310 nm10.4 ± 0.8 @1550 nm<0.22 @ 1310 nm<0.35 @ 1550 nm

0.14

0.090 @
1300 nm0.095 @
1550 nm

3.0

45429

SMF-20007/125-0.25-L

1850-2200

<1800

7

125 ± 18 ȝm @ 1950 nm

N/A

0.2

0.155 @
1950 nm0.25

Notes:
1

While the fibers will work over the entire operating range listed, it is recommended that one selects the fiber with the longest wavelength specifications that still operates
at your wavelength of interest. For instance, for 780 nm work we recommend selecting SMF-780-5/125 fiber over SMF-633-4/125 fiber.
2 If the fiber is used at wavelengths less than the cutoff wavelength, the fiber will still transmit light. However it will begin to behave like a multimode fiber. This is notdesired in most applications.
3 Most fiber manufacturers define the numerical aperture of their fibers based on the refractive indices of the core and cladding (i.e., NA = [NCO2 - NCL2]1/2). While thisdefinition is useful for step index multimode fibers, it is not a very accurate way to predict the far field behavior of light from singlemode fibers.
A more accurate technique is to use the Mode Field Diameter (MFD) for the light within the fiber to determine the far field. We can treat the output from the fibers as
being essentially Gaussian in behavior. If we then define the effective numerical aperture (NAeff) of the fiber as being the sine of the angle from the center to where theintensity drops to 1/e2 of the original value then one can show that NAeff = 2O/SMFD. We have listed NAeff for each fiber at typical values for the mode field diameter andwavelength in the table.
4 The jacket diameters listed are for those fibers that come from the manufacturer pre-cabled. For short lengths of fibers OZ Optics can cable the fibers in a loose tube
cable. For instance, SMF-780-5/125-0.25-L fiber, which has a 0.25 mm coating diameter, can be cabled with a 0.9 mm diameter loose tubing to provide extra protection.
5 These fibers feature pure fused silica fiber cores for improved optical power handling.
6 Corning SMF-28 fiber is used for both 1300 nm and 1550 nm singlemode applications unless otherwise specified.

Polarization Maintaining (PM) fibers: PM fibers are a special variety of singlemode fibers, designed to maintain the polarization properties of linearly polarized light sources, provided that the light is launched along either the slow or fast axes of the fiber.
The most common method to do this is by adding two stress applying parts (SAP) on either side of the fiber core. Our standard
PM fibers use a PANDA fiber geometry, with two circular stress rods. We can provide fibers with other geometries, such as Bowtie PM fibers.
Like our singlemode fibers, the wavelength range is limited by their cutoff wavelengths and bend sensitivity at long wavelengths.
OZ Optics offers special broadband RGB PM fibers for visible light applications, able to transmit light from 400nm to 650nm.
Standard PM fibers (PMF) normally have a germanium doped core with a pure silica cladding, while for wavelengths shorter than
600nm we instead use fibers with a pure fused silica core with a fluorine doped cladding (QPMF fibers).

4

Table 5: Standard Polarization Maintaining Fibers1
OperatingWavelength
Bar
Part Number
Range2
Code
(nm)
27626

QPMF-3502/125-0.25-L

QPMF-40029228
3/125-0.25-L6
QPMF-4881170
3.5/125-1-L6
PMF-633-4/
1172
125-0.25-L
PMF-633-4/
1174
125-1-L
PMF-850-5/
1181
125-0.4-L
PMF-850-5/
2813
125-0.25-L
PMF-980-6/
3382
125-0.4-L
PMF-980-6/
8574
125-0.25-L
PMF-13004570
7/125-0.25-L
PMF-15501194
8/125-0.4-L
PMF-15504550
8/125-0.25-L
PMF-200044065
7/125-0.25-L

350-440

CutoffWavelength
(nm)3

Core
Diameter(ȝm)

Cladding
Diameter(ȝm)

Mode Field
Diameter(ȝm)

Attenuation(dB/km)Numerical
Aperture(Manufacturer's
Specs)4

Effective
Numerical
Aperture(1/e2)4

Jacket or
Buffer
Diameter(mm)5JacketMaterial

Polarization
Crosstalk(dB/100m)

<340

2

125

2.3@350 nm
2.6@405 nm

<200

0.12

0.097

0.25

Dual
Acrylate<-20405-480

<400

3.0

125

3.1 (Typical)

<100

0.11

480-630

<470

3.5

125

3.8 (Typical)

<50

0.11

630-820

<620

4

125

4.5 (Typical)

<12

0.11

630-820

<620

4

125

4.5 (Typical)

<12

0.11

810-980

<750

5

125

5.5 ± 1<3

0.11

810-980

<750

5

125

5.5 ± 1<3

0.11

980-1300

<970

6

125

6.6 ± 1<3

0.11

980-1300

<970

6

125

6.6 ± 1<3

0.111290-1550

<1280

7

125

9.5 ± 1

<1.0

0.11

1460-1625

<1450

8.7

125

10.5 ± 1

<0.5

0.11

1460-1625

<1450

8.7

125

10.5 ± 1

<0.5

0.11

1850-2200

<1800

7.0

125 ± 1

8.0

NA

0.2

0.082 @
400 nm0.082 @
488 nm0.089 @
633 nm0.089 @
633 nm
0.098 @
850 nm
0.098 @
850 nm
0.095 @
980 nm
0.095 @
980 nm0.088 @
1310 nm0.094 @
1550 nm0.094 @
1550 nm0.155 @
1950 nm

0.9
0.9
0.25
0.9
0.40
0.25
0.40
0.25
0.25
0.40
0.25
0.25

Dual
Acrylate
Acrylate /
Nylon
Dual
Acrylate
Acrylate /
Nylon
Dual
Acrylate
Dual
Acrylate
Dual
Acrylate
Dual
Acrylate
Dual
Acrylate
Dual
Acrylate
Dual
Acrylate
Dual
Acrylate

<-20
<-25
<-25
<-25
<-25
<-25
<-25
<-25
<-25
<-25
<-25
<-20

Notes:
1

All standard polarization maintaining (PM) fibers are based on the PANDA PM fiber structure. Other types are available on request.

2 While the fibers will work over the entire operating range listed, it is recommended that one selects the fiber with the longest wavelength specifications that still operates atyour wavelength of interest. For instance, for 820 nm work we recommend selecting PMF-850-5/125 fiber over PMF-633-4/125 fiber.
3 If the fiber is used at wavelengths less than the cutoff wavelength, the fiber will still transmit light. However it will begin to behave like a multimode fiber. It will no longer work

like a polarization maintaining fiber.
4 Most fiber manufacturers define the numerical aperture of their fibers based on the refractive indices of the core and cladding (i.e., NA = [NCO2 - NCL 2]1/2). While thisdefinition is useful for step index multimode fibers, for singlemode fibers, it is not a very accurate way to predict the far field behavior of light from the fiber. A moreaccurate technique is to use the Mode Field Diameter (MFD) for the light within the fiber to determine the far field. We can treat the output from the fibers as being
essentially Gaussian in behavior. If we then define the effective numerical aperture (NA eff) of the fiber as being the sine of the angle from the center to where the intensity
drops to 1/e2 of the original value then one can show that NAeff = 2O/SMFD. We have listed NA eff for each fiber at typical values for the mode field diameter andwavelength in the table.
5

The jacket diameters listed are for those fiber that come from the manufacturer pre-cabled. For short lengths of fibers OZ Optics can cable the fibers in a loose tube cable.
For instance, PMF-1550-8/125-0.4-L fiber, which has a 0.4 mm coating diameter, can be cabled with a 0.9 mm diameter loose tubing to provide extra protection.

6

These fibers feature pure fused silica fiber cores for improved optical power handling.

5Large Mode Area (LMA) fibers: For many high power applications transmitting tens of Watts of optical power, standard singlemode fibers are not suitable because of their small core size. On the other hand multimode fiber suffer from speckle patterns
and large beam sizes. LMA fibers offer a compromise by giving a large core size for high power handling at the expense of alower numerical aperture, making them more sensitive to bending losses. In many cases, these fibers are not truly singlemode,
but are better described as low order multimode fibers. However by carefully controlling how light is launched in these fibers andhow much they bend, one can transmit nearly singlemode light, thus generating output beams that can be focused to the small
spot sizes needed for laser marking, welding and machining operations.

Table 6: Large Mode Area Fibers
Bar CodePart Number

OperatingWavelength
(nm)

Core
Diameter(ȝm)

Cladding
Diameter(ȝm)

Attenuation (dB/km)

Numerical Aperture

Buffer
Diameter(mm)

Buffer Material

36269

SMF-1060-20/125-0.25-L-LMA

1064

20

125

<10dB/km

0.10

0.25

Acrylate

35688

SMF-1060-25/125-0.25-L-LMA

1064

25

125

<10dB/km

0.10

0.25

Acrylate

34564

SMF-1064-20/130-0.25-L-SP

1064

20

130

<10dB/km

0.08

0.25

Acrylate

35689

SMF-1060-25/250-0.4-L-LMA

1064

25

250

<10dB/km

0.06

0.40

Acrylate

7
7
Table
PMPM
Large
Mode
Area
FibersTable7:
2B:
Large
Mode
Area
FibersBar CodePart Number

OperatingWavelength
Range2(nm)

CutoffWavelength
(nm)3

Core
Diameter(ȝm)

Numerical
Cladding
Aperture
Attenuation
Diameter(Manufacturer's(dB/km)(ȝm)
Specs)4

37895

PMF-1064-10/125-0.25-L

980-1100

<980

10

125

<5.0

50553

PMF-1064-20/125-0.25-L-PLMA

920-1100

<900

20

125

<5.0

Jacket or
Buffer
Diameter(mm)5JacketMaterial

Polarization
Crosstalk(dB/100m)

0.085

0.25

Dual
Acrylate

<-30

0.08

0.25

Dual
Acrylate<-30

Notes:
1

All standard polarization maintaining (PM) fibers are based on the PANDA PM fiber structure. Other types are available on request.

2 While the fibers will work over the entire operating range listed, it is recommended that one selects the fiber with the longest wavelength specifications that still operates atyour wavelength of interest. For instance, for 820 nm work we recommend selecting PMF-850-5/125 fiber over PMF-633-4/125 fiber.
3 If the fiber is used at wavelengths less than the cutoff wavelength, the fiber will still transmit light. However it will begin to behave like a multimode fiber. It will no longer work

like a polarization maintaining fiber.
4 Most fiber manufacturers define the numerical aperture of their fibers based on the refractive indices of the core and cladding (i.e., NA = [NCO2 - NCL 2]1/2). While thisdefinition is useful for step index multimode fibers, for singlemode fibers, it is not a very accurate way to predict the far field behavior of light from the fiber. A moreaccurate technique is to use the Mode Field Diameter (MFD) for the light within the fiber to determine the far field. We can treat the output from the fibers as being
essentially Gaussian in behavior. If we then define the effective numerical aperture (NA eff) of the fiber as being the sine of the angle from the center to where the intensity
drops to 1/e2 of the original value then one can show that NAeff = 2O/SMFD. We have listed NA eff for each fiber at typical values for the mode field diameter andwavelength in the table.
5

The jacket diameters listed are for those fiber that come from the manufacturer pre-cabled. For short lengths of fibers OZ Optics can cable the fibers in a loose tube cable.
For instance, PMF-1550-8/125-0.4-L fiber, which has a 0.4 mm coating diameter, can be cabled with a 0.9 mm diameter loose tubing to provide extra protection.

6

These fibers feature pure fused silica fiber cores for improved optical power handling.

7

Single clad passive PM fiber.

6