Project Description

2000/1550nm Single Mode Filter WDM

The 2000/1550nm SM Filter Wavelength Division Multiplexer is based on environmentally stable thin-film filter technology. The devices combine or separate light at different wavelength in a wide wavelength range. They offer very low insertion loss, low polarization dependence, high isolation and excellent environmental stability. High power handling capability can be achieved through unique pigtail processing and high quality AR coating. These components have been extensively used in EDFAs, Raman amplifiers, WDM networks and fiber optical instruments.

Features Applications
·         Low Insertion Loss

·         Low Polarization Dependent Loss

·         High Isolation

·         High stability & Reliability

 ·         EDFA

·         Testing Instrumentations

·         Fiber Laser

·         WDM System

Performance Specifications

Parameter Unit Values
Pass band Wavelength nm 1950~2050
Min. Isolation at 23℃ dB 25(Typ.30)
Max. Insertion Loss at 23℃ dB 0.8 (Typ.0.6)
Reflection band Wavelength nm 1520~1580
Max. Insertion Loss at 23℃ dB 0.8 1.0
Min. Isolation at 23℃ dB 12(Typ.15)
Max. Polarization Dependent Loss dB 0.2(Typ. 0.1)
Min. Return Loss dB 50
Max. Optical Power(CW) mW 500
Max. Thermal Stability dB/℃ 0.005 over -5 °C to +70 °C
Fiber Type – SMF-28(all ports) or SM1950 fiber(all ports) SMF-28e fiber on R port,

SM1950 fiber on C & P port
Operating Temperature ℃ -5~+70
Storage Temperature ℃ -40~+85

1.Above specification are for device without connector, and may change without notice.

2.IL is 0.3 dB higher and RL is 5 dB lower for each connector added.

3.The pass optical power is 2 W only for connector added.

  1. For high power applications, we will use heat sink package, contact DK Photonics for details.

Package Dimension

Order information  P/N: FWDM-1X2-①-②-③-④-⑤-⑥

When you inquire, please provide the correct P/N number according to our ordering information, and attach the appropriate description would be better. If need any connector, we do not recommend choosing a 250μm bare fiber pigtail.

① ② ③ ④ ⑤ ⑥
Wavelength Power Handling Fiber Type Pigtails Diameter Fiber Length Connector
2055: 2000nm pass/1550nm reflect S:<0.3W

L:<0.7W

1:1W

2:2W

 1: SMF-28e for all ports

2: SM1950 for all ports

3: SMF-28 for R,SM1950 for C & P port

 25:250μm bare fiber

90:900μm Loose Tube

XX: Others

 05:0.5m

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: PMFWDM-2055-S-2-25-10-00

Description: 2000/1550nm SM Filter WDM – 0.3W,2000nm pass/1550nm reflect, SM1950 for all ports, with bare fiber, 1.0 fiber length, and no connector 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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