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Polarization Maintaining Fused Wide Band Coupler(PMWBC)

LightComm uses unique fusing technique and polarization maintaining fiber to build the polarization maintaining fused wide band coupler (PMWBC).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, optical amplifier.

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PM Wideband Coupler.pdf


Specifications:

Operating wavelength

CR

IL (dB)

ER (dB)

Dimensions
  Φ×L(mm)

P

A

1310, 1480, 1550

±40nm

50/50

≤3.8

≥20

≥18

3×54 or

customized

30/70

≤6.1/2.3

20/80

≤8.1/1.7

10/90

≤11.5/1.2

5/95

≤14.5/0.9

≥18/20

≥16/20

3/97

≤17.1/0.6

2/98

≤18.5/0.5

1/99

≤22.0/0.45

≥no/20

≥no/18

0.1/99.9

28~32 / 0.4

 

Parameter

Unit

Specification

Return loss

dB

≥50

Directivity

dB

≥50

Power handling

mW

≤500

Operating temperature

-575

Storage temperature

-4085

Fiber type

Panda PM   fiber

1).The specifications are without connectors. For devices with connectors, IL should be 0.3 dB higher ,and ER should be 2dB lower.

2). For device adding connectors, key aligns to slow axis if no special requirement.