Overview

Key Features

Applications

Package Dimensions

488-2100 nm Polarization Maintaining Fused Coupler

The PM fused coupler 488-2100 nm combines advanced polarization-maintaining technology with reliable performance. It is tailored for biochemical equipment, autonomous vehicles, and fibre-sensing applications.

Parameter

Unit

Value

Center Wavelength (λc)

488/532/635

780/830

980/1064

1310/1480/ 1550

1700/2000

Operating Wavelength

λc ± 5

λc ± 10

λc ± 20

Typ. Excess Loss

0.8

0.5

0.4

0.2

0.5

Max. Excess Loss

1.2

0.8

0.6

0.4

0.8

Min. Extinction Ratio*

Max. Excess Loss for Each Connector

1.5

0.7

0.5

0.3

Max. Optical Power (Continuous Wave)

Thermal Stability

dB/℃

≤ 0.005

Min. Return Loss*

Min. Directivity

Fiber Type for Signal Port

PM Fiber

Fiber Type for Tap Port

PM Fiber or Singlemode Fiber

Operating Temperature

℃

-5 to +70

Storage Temperature

℃

-40 to +85

Coupling Ratio

1/99

2/98

5/95

10/90

20/80

30/70

40/60

50/50

Max. Coupling Ratio Tolerance, λc

± 0.3

± 0.5

± 0.7

±1.0

± 2.0

± 2.5

± 3.0

Coupling Ratio

0.1/99.9

0.01/99.99

Tap Ratio Tolerance, λc

30 ± 3

40 ± 4

*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 is not considered.

*ER will be 2 dB lower for Nufern FUD-3460 fiber and Nufern PM 1950 fiber.

*RL is 5 dB lower, ER is 2 dB lower for each connector added. Connector key is aligned to slow axis.

*The Optical Power is 1 W only for connector added. For visible wavelength, the limit is 50 mW.

*Data tested at central wavelength only.