Focusing Module

OPTOQUEST CO., LTD.
Table of Contents

This focusing module is convenient for optical coupling of semiconductor lasers (LD)and semiconductor optical amplifiers (SOA), and also optical coupling experiments ofvarious waveguides in the optical communication wavelength band or in a range fromnear-infrared to visible wavelength region.
This module is designed to place a φ2.5-mm tip as close as possible to the element.

Features- Highly efficient LD light focus- Highly efficient optical coupling to waveguides- Small-sized for easy implementation- Easy selection of specifications and options
depending on applications
Various types of focusing modules are successfully developed to handle special magnification
or wavelength.
Please refer to the following list for an introduction to some of the variations.

- Built-In Isolator Type
Lens #1
Fiber
第一ﾚﾝｽﾞ
ファイバ(PMF or SMF)
(PMFｏｒＳＭＦ)> Features

アイソレータIsolatorLens#2
第二ﾚﾝｽﾞ

- Primarily suitable for use in the communication bandwidth (1300 nm and 1550 nm)(Please contact us for other wavelengths.)- Capability to control reflection from fibers ends and elements- Polarization type and polarization-independent type are also available options.

- Built-In Polarizer Type
Fiber
ファイバ
(PMF)
(PMF)

> Features

Lens #1
第一ﾚﾝｽﾞ

偏光子
Polarizer

Lens #2
第二ﾚﾝｽﾞ

- Use in a range from visible region to the telecommunication band
(Please specify a center wavelength to be used.)- Suitable for focusing to polarization-dependent elements- Built-In Rotating Linear Polarization Mechanism Type

Fiber
ファイバ
(PMF)
(PMF)

> Features
March 01, 2015

Lens #1
第一ﾚﾝｽﾞ

Polarizer
偏光子

λ/4
Wave Plate
１/４波長板λ/4λ/4 Wave
Wave Plate
Plate Polarizer
１/４波長板偏光子

Lens #2
第二ﾚﾝｽﾞ

回転機構部分Rotation
Mechanism- Use in a range from visible region to the telecommunication band
(Please specify a center wavelength to be used.)- Focusing of linearly polarized light with high extinction ratio in an arbitrary direction50

OPTOQUEST CO., LTD.
Table of Contents

Ordering Instructions+Focusing Module
Order format: CLMA - (1) - (2) - (3)(4) / (5) - (6) - (7)Order format example: CLMA-13-1.8-S9/S(λ: 1310nm, Spot diameter: 1.8um, Fiber: DSF, Line type: φ0.9mm, Connector: SC/SPC* Specifications may be changed without prior notice for product improvement.

Typical Specifications(1) Wavelength

15: 1550 nm 13: 1310 nm 10: 1060 nm
85: 850 nm 78: 780 nm 65: 650 nm

Insertion Loss
Reflection Attenuation
AmountSingle-ModeSystem(1310 and 1550nm)(2) Spot Diameter (µm)*1/
W.D. (mm)< 0.8 dB (excluding adapter connection loss)> 50 dB (1.5 and 1.31 µm)> 40 dB (near-infrared to visible ranges to warrant the design)
1.8/0.3

2.8/
0.3(3) Optical Fiber

Dispersion
Shift System(1550 nm)(2) Spot Diameter (µm)*1/
W.D. (mm)Near-Infraredto Visible
Ranges(3) Optical Fiber(4) Line Type
(5) Optical Connector(6) Extinction Ratio(7) Isolator *2

3.9/
0.3

S: SMF
2.2/
0.3

4.5/
1.0

6.3/
1.7

P: PMF (L = 1.0 m)

3.1/
0.3

(3) Optical Fiber(2) Spot Diameter (µm)*1/
W.D. (mm)98: 980 nm

3.6/
1.05.0/
1.7

5.8/
1.0

D: DSF (L = 1.0 m)
Please specify a spot diameter and a W.D. of your choice.
We will consider your request to optimize our proposal.
We propose wavelength-suitable fibers.
3: φ3 mm PVC cords
F: FC/SPC
FA: FC/Angled PC
20: < 20 dB

9: φ0.9 mm core fibers
S: SC/SPC
SA: SC/Angled PC

25: < 25 dB (only at the time of PMF selection)

Not Coded: None IA: Polarization Type Built-In ISO
IB: Non-Polarization Type Built-In ISO*1 Spot diameter values are obtained based on a geometric optics calculation method.
*2 Please contact us for different characteristics of built-in isolator type.
*3 Appropriate fibers for each wavelength will be used.
March 01, 201551