OMH
6700B

Product Features
Measures power and wavelength from
900 to 1650nm

InGaAs Power/Waveheads

NIST traceable calibration
Measures up to 10W optical power
Integrating sphere-based
measurements
Temperature-controlled InGaAs
photodetectors
Free-space and fiber-coupledmeasurements
Fiber exit port for externalmeasurements (OMH-6795B only)
The OMH-6700B InGaAs Power/ Waveheads
provide the flexibility to easily and accurately measure
the optical power and wavelength of laser sources inthe near infrared spectrum. These products incorporate
ILX’s unique integrating sphere-based power andwavelength measurement capability. The OMH-6727B
allows free-space power and wavelength measurementfrom 950 to 1650nm while the OMH-6745B and OMH6795B allow fiber-based measurements from 900 to1650nm, up to 1W and 10W, respectively. The OMH6795B power/wavehead was developed specificallyfor high power 14XX pump laser diodes with barefiber measurements and low polarization dependent
response.

Measure with Confidence
The OMH-6700B InGaAs Power/Waveheads arecalibrated to NIST traceable standards in ILX’s own
calibration laboratory where accuracy and traceability
are its primary concerns. ILX’s documented quality
system ensures conformance to continuous traceability
and ultimately your confidence in the power/waveheadmeasurements.

Simplify Optical Measurements
Integrating spheres simplify optical power
measurements of laser diodes and LEDs by
eliminating measurement problems related to detector
saturation, alignment beam profile, polarization, andback reflection. Integrating spheres are inherently
insensitive to beam profiles, providing you with more
flexibility in laser type and launch conditions. Filtereddetectors on the interior of the sphere receive an
equal distribution of incident light, ensuring that thecalibration and resultant measurement accuracy areindependent of the beam profile.

Repeatable, Accurate Measurements
The detectors in the 6700B power/waveheads aretemperature controlled to ensure that repeatablemeasurements are made independent of themeasurement environment. Temperature controllingthe detectors increases the signal -to-noise ratio,
improving the accuracy of the measurements.

Measurement Flexibility
Each measurement head can be easily configured
for fiber-coupled measurements. A choice of adaptersOMH6700B
InGaAs Power/
Waveheads

is available for FC, SC, LC, ST, and DIN connectors. Bare fiber measurements are also possible with abare fiber adapter. More flexibility was designed into the heads with the addition of a fiber light exit port toconnect to an OSA or other measurement instrument (OMH-6795B only).

Specifications1
WAVELENGTH MEASUREMENT

Wavelength Range:
Accuracy:2
Detection (minimum power required):

POWER MEASUREMENT

OMH-6727B

OMH-6795B

950 to 1650nm±1.0nm-20dBm1200 to 1650nm±2.0nm-10dBmPower Range:3
Damage Threshold:Accuracy:4
Operating Conditions:
Polarization Dependent Response:7
Measurement Repeatability:8
Entrance Aperture:
Numerical Aperture:
Sensor Type:
Noise:-40 to +30dBm+42dBm-30 to +40dBm+42dBm

±5.0%5,6------------------6mm---------InGaAs
5nW p-p (typ.) at 1550nm10

Linearity:4, 11
Temperature Coefficient:
Fiber Exit Port:----------0.1%/°C (typ.)NA±5.0%5±0.002dB±0.003dB
Fiber input, 2.54mm
0.1 to 0.3
InGaAs≤60nW p-p (1200 to 1650nm);
typical 30nW p-p @ 1480nm10±0.1dB, ±60nW<-0.15% /°C (typical)3
For 1W of input power, 1µW(nominal) output (60dBattenuation); fiber core:
62.5µm FC/PC receptacle

GENERAL

Environment
Operating Temperature:
Storage Temperature:
Humidity:
Compatible Connector Types:
Dimensions:+10°C to +40°C–20°C to +60°C<85% RH, non-condensing
FC, SC, ST,DIN, Bare Fiber
69mm (dia.) x 28mm (thick)Weight:13.3 ounces

NOTES

Typical values provide supplemental information beyond guaranteed specification limits.
1 Unless otherwise noted, all specifications measured at 23°C ±3°C after one-hourwarm-up period. Fiber optic head specifications applicable for 9/125 to 110/140µm
fiber, NA = 0.3.
2 This instrument’s wavelength measurement technology provides “power-averaged”
wavelength (i.e., spectral contributions to which detectors are sensitive aremeasured).
3 Typical photodiode response is linear over a 60 to 70dB range between the effectsof thermal noise and saturation of the diode. ILX power meter heads are calibrated
above the noise threshold, and linearity is verified in order to produce an accurate
calibration for optical power measurements to 10W.
4 Includes traceability to NIST. Calibrated to 21°C ±3°C at 10nm intervals. Uncertainty
evaluated according to NIST Technical Note #1297: “Guidelines for Evaluating andExpressing the Uncertainty of NIST Measurement Results.” Accuracy specifications
are verified with the wavelength entered manually (instrument not in auto-wavelengthmode). For auto-wavelength mode, add ±0.8% to the accuracy uncertainty.
5 Manually set wavelength. Add +0.5% for auto wavelength mode. For 6795B, add+1.2% for auto wavelength mode. Add +1.0% for  > 1500nm.
6 For input power > 100mW, add +0.05%/100mW.
7 Variation in meter response associated with changes in input polarization state.
Specification is for flat endface (cleaved) fiber. Add PDL for connectors or angledcleave measurements. For example, 8° cleave in SMF-28 fiber typically adds
0.015dB PDL.
8 Variation in response from removing and replacing the fiber or connector into thedetector head. Includes effects of variation in fiber orientation and bare fiberextension 1 to 5mm from the holder. Add ±0.003dB for NA >0.20.
9 Measured over one minute, in gain range seven, medium filter mode.
10 Measured over one minute, in medium filter mode at 975nm.
11 Total variation from straight-line response. Valid across range limits if measured inauto-range mode. Measured at 920nm, 23 ±5°C, constant temperature. Add±0.005dB/dB for input power >20dBm.

+10°C to +40°C–20°C to +60°C<85% RH, non-condensing
FC, LC, SC,E2000, Bare Fiber
86mm (H) x 86mm (W) x100mm (D)2.95 lbs. (1.34 kg.)

ORDERING INFORMATION

OMM-6810B Optical Multimeter (Includes GPIB Interface)
LPA-9082 Laser Parameter Analyzer (200/400mA)
LPA-9084 Laser Parameter Analyzer (2A/4A)
OMH-6727B Power/Wavehead 950-1650nm
OMH-6745B Power/Wavehead 900-1650nm
OMH-6795B 10W Power/Wavehead 1200-1650nm
Accessories
OMH-6727B
AO271 FC Adapter Assembly
AO272 SC Adapter Assembly
AO273 ST Adapter Assembly
AO276 DIN Adapter Assembly
AO120 Bare Fiber Adapter Ring
MK-650 Head Mounting Kit (requires CA-120)
BF-820 Bare Fiber Holder(OMH-6727B also requires AO120)

OMH-6795B
CA-100 FC Adapter
CA-120 Bare Fiber Adapter
CA-150 SC Adapter
CA-2001 LC Adapter
CA-500 Accessory Case
BF-820 Bare Fiber Holder

OMH-6745B
AO22104 FC Adapter
AO24102 ST Adapter
AO26102 SC Adapter
AO226 DIN Adapter
AO281 Hewlett Packard Connector Adapter Ring
AO120 Bare Fiber Adapter Ring
AO601 Rotational Adapter Ring

In keeping with our commitment to continuing improvement, ILX Lightwave reserves theright to change specifications

For information call
P.O. Box 6310 Bozeman, MT 59771 • FAX: 406-586-9405

www.ilxlightwave.com1-800-459-9459
International Inquiries: 406-556-2481

email: sales@ilxlightwave.com

REV04 042909