Project Description

1×2(2×2) 80um Fused PM Fiber Coupler

DK Photonics uses unique fusing technique and polarization maintaining fiber to build the 1×2 (2×2) 80um Fused PM Fiber Coupler. The coupling ratio could be selected according to customer’s request. It features low excess loss, small size and high polarization extinction ratio. PMC is widely used for optical sensors and optical gyro.

If you do not see a standard PM Fused Coupler that meets your needs, we welcome the opportunity to review your desired specification and quote a custom PM fused Coupler. Requests for custom fiber pigtails, different wavelengths, tap Ratio and handling power of operation or other specific needs will be readily addressed.

Features Applications
·       Low Excess Loss

·       High Extinction Ratio

·       Compact In-Line Package

·       Available for Slow or Fast Axis Operation

·       High Stability and Reliability

·       Fiber Optic Hydrophone

·       Fiber Optic Gyroscope

·       Fiber Sensors

·       Coherent Detecting

·       Research

Performance Specifications

Parameter Unit Values
Grade P grade A grade P grade A grade
Center Wavelength nm 1310,1550 980,1030,1064
Wavelength Range nm ±20
Max. Excess Lose dB 0.5 0.8 0.7 0.9
Min. PER for Through Port dB 22 20 20 18
Directivity dB 55
Max. Power Handling W 0.5, 2, 3, 5
Max. Tensile Load N 5
Fiber Type 80/165μm bare Panda fiber
Operating Temperature -40 ~ +85
Storage Temperature -40 ~ +85
Dimensions mm Ф3.0×L30

Max. Coupling Ratio Tolerance, @λc:

Coupling Ratio 1/99 2/98 5/95 10/90 20/80 30/70 40/60 50/50
Tolerance for P grade (%) ±0.5 ±0.6 ±1.0 ±1.5 ±2.5 ±2.8 ±2.8 ±3.5
Tolerance for A grade (%) ±0.7 ±0.8 ±1.2 ±2.0 ±3.0 ±3.5 ±3.5 ±5.0
  1. Above specifications are for device without connector, and the PM fused coupler is both axis working, no axis can be blocked; default test extinction ratio is on the slow axis. All parameters are tested at room temperature at central wavelength only.
  2. ER data listed in the table are for the ports with coupling ratio greater than 10%. It will be 2 dB lower for a tap port with coupling ratio between 1-10%. For 1% tap port, ER may be not considered.
  3. For devices with connectors, IL will be 0.3dB higher, RL will be 5dB lower and ER will be 2dB lower. Power transmits through the connector less than 2W.The default connector key is aligned to slow axis.

Order information    P/N: RCPMFBTC-①-②-③-④-⑤-⑥-⑦-⑧-⑨

When you inquire, please provide the correct P/N number according to our ordering information, and attach the appropriate description would be better.

Grade Port Operating Wavelength Power Handling Coupling Ratio Fiber Type for Tap Port (>5%) Fiber Diameter Fiber Length Connector
P: P grade

A: A grade

102:1×2

202:2×2

78:780nm

85:850nm

98:980nm

30:1030nm

64:1064nm

13:1310nm

14:1480nm

15:1550nm

XX: Others

L:<0.5W

2:2W

5:5W

10:10W

50:50/50

40:40/60

30:30/70

20:20/80

10:10/90

05:5/95

02:2/98

01:1/99

XX: Others

0:SM fiber

1:PM Panda fiber

165:bare fiber

90:900μm Loose tube

XX: Others

08:0.8m

10:1.0m

XX: Others

00:None

FP: FC/PC

FA: FC/APC

SP: SC/PC

SA: SC/APC

LP: LC/PC

LA: LC/APC

XX: Others

Part Number Example:  PMFBTC-S-P-202-55-L-50-1-165-10-00

Description: 1550nm 2×2 80um Fused PM Fiber Coupler ,P grade, 300mW, 50:50 coupling ratio, 1.0m length 80/165μm bare Panda fiber at all port, without connectors at all ports.

Ordering Information for Custom Parts

If you need to customize other specifications, please provide detailed description for your requirement.

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