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Wuhan Seifree Technology Co., Ltd Expert of passive optical components
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Wide Wavelength Range WDM Fiber Optic Filter 1550nm Passband For Optical Amplifiers

Wuhan Seifree Technology Co., Ltd
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Wide Wavelength Range WDM Fiber Optic Filter 1550nm Passband For Optical Amplifiers

Brand Name : Seifree
Model Number : STWDM-D-55-346-E-0-0-B6-SU
Place of Origin : Wuhan China
MOQ : 1pc
Price : negotiation
Payment Terms : T/T, Western Union
Supply Ability : 3,000pcs per month
Delivery Time : 1-2 weeks after payment
Packaging Details : Transparent and plastic boxes package, 2pcs WDM in 1 box
Ptoduct Name : FWDM
Passband : 1550nm
Reflection Band : 1310nm 1490nm
Ports : 1x1
PDL : ≤0.1dB
Tensile Load : ≤5N
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WDM Filter Fibre Optic FWDM , Passband 1550nm , Reflect 1310nm and 1490nm


Filter WDM module extensively used in optical amplifiers, WDM networks. The device combines or separates light at different wavelengths (1310nm/1490nm/1550nm) in a wide wavelength range. It can expand the capacity of a single fiber to achieve bidirectional communication, so that widely used in optical network upgrade and expansion, or introduce new comprehensive business etc.
It works on 1310nm/1490nm, so CATV signal here is delivered over same fiber using 1550nm, and FWDM is a place where all this get together.


1. Wide Wavelength Range

2. Low Insertion Loss

3. High Channel Isolation

4. High Stability and Reliablity


1. System Monitoring

2. WDM System

3. Transmitters and Fiber

4. Fiber Optical Amplifier


PN: STWDM-D-55-346-E-0-0-B6-SU

Operating Wavelength Rangenm1260~1620
Center Wavelengthnm1550
Reflection Bandnm1260~1515&1585~1620 (Remove this port)
Passband FlatnessdB<0.3
Insertion Loss*dBIN->O1 @1550nm≤0.5
IN->O1 @ PB≤0.8
Isolation IN->O1 @ 1490nmdB≥30
Isolation IN->O1 @ RBdB≥30
Return LossdB≥45
Maximum Tensile LoadN≤5
Pigtail Diametermm0.9
Pigtail Lengthcm≥100
Connector & Adapter Type/SC/UPC
Connector LossdB≤0.25
Power HandlingmW≤300
Fiber Type/SMF-28e
Operating Temperature-10~+70
Storage Temperature-40~+85
Package Dimension(L x W x H)mm130x112x26

Note: * All the data above does not include connectors.

Quality and Warranty

1. Our strict quality control is seriously from raw material to the end products, all products is checked and passed our QC before shippment.

2. We provide 12 months warranty for all our products

3. All products are Telcodira GR-468-CORE qualified and RoHS compliant.

4. The defect products we will repair or replace freely after got your offical defective report.

OEM/ODM Service:

1. We are warm welcome the OEM and ODM orders

2. Our salesman, designer and engineer will work together with you for the OEM project

3. Mold cost is on your account, and you have all rights for the mold, we respect each customer’s idea and copyright, and keep this as business secret

4. We are providing the most flexible customization and service time to meet your demands, working with us to save your time and money.

Product Tags:

optical low pass filter


fiber optic filter

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