980/1550nm Filter WDM

The 980/1550nm 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

·         Wide Operating Wavelength Range

·         Ultra Flat Wide Passband

·         High Channel Isolation

·         High Stability and Reliability

·         Epoxy Free Optical Path

 ·         System Monitoring

·         WDM System

·         Transmitters and Fiber Lasers

·         Fiber Optical Amplifier

·         Fiber Optic Instruments

Performance Specifications

Parameter Unit Values
Transmission Wavelength Range nm 1520~1580 (or 980~990)
Reflect Wavelength Range nm 960~990 (or 1520~1580)
Max. Insertion Loss Transmission dB 0.8
Reflect dB 0.5
Min. Isolation Transmission dB 25
Reflect dB 12
Max. PDL dB 0.10
Min. Channel Flatness dB 0.3
Min. Return Loss dB 50
Max. Power Handling(CW) W 0.3, 0.7, 1, 2, 3
Max. Tensile Load(N) N ≤5
Fiber Type – HI1060 for 980nm port, other SMF-28e fiber
Operating Temperature ℃ -5 to +70
Storage Temperature ℃ -40 to +85
Package Dimensions mm Ø5.5 x L35
  1. Above specification are for device without connector, and may change without notice. All parameters are tested at room temperature.
  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.
  4. For >10W high power applications, we will use heat sink package, contact DK Photonics for details.
  5. If there is pulse application, please be sure to inform us of pulse energy and peak power.

Package Dimension

*Due to ongoing design improvements, the package size is subject to change. Please contact DK Photonics for confirmation.

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
Wavelength Power Handling Pigtails Diameter Fiber Length Connector
59: 1550nm pass/980nm reflect

95: 980nm pass/1550nm reflect

 S:<0.3W

L:<0.7W

1:1W

2:2W

 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

SA: SC/APC

LA: LC/APC

XX: Others

Part Number Example: FWDM-59-S-90-10-FA

Description: 980/1550nm Filter WDM – 0.3W,1550nm pass/980nm reflect with 0.9mm OD loose tube, 1.0 fiber length, and FC/APC 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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