Wuhan Seifree Technology Co., Ltd

Wuhan Seifree Technology Co., Ltd


Expert of passive optical components

Home ProductsCWDM Mux Demux

4 Channel CWDM Mux Demux Slot Type For Line Monitoring / WDM Network , 1271nm - 1331nm

4 Channel CWDM Mux Demux Slot Type For Line Monitoring / WDM Network , 1271nm - 1331nm

    • 4 Channel CWDM Mux Demux Slot Type For Line Monitoring / WDM Network , 1271nm - 1331nm
    • 4 Channel CWDM Mux Demux Slot Type For Line Monitoring / WDM Network , 1271nm - 1331nm
  • 4 Channel CWDM Mux Demux Slot Type For Line Monitoring / WDM Network , 1271nm - 1331nm

    Product Details:

    Place of Origin: Wuhan China
    Brand Name: Seifree
    Model Number: SCWDM-D-0204-271-E-0-0-B6-SU

    Payment & Shipping Terms:

    Minimum Order Quantity: 1 Unit
    Price: negotiation
    Packaging Details: Carton
    Delivery Time: 1-2 weeks after payment
    Payment Terms: T/T, Western Union
    Supply Ability: 3,000pcs per month
    Detailed Product Description
    Product Nume: CWDM Mux Demux Wavelength: 1271nm - 1331nm
    Package: Slot Type Channel: 4CH
    Warranty: 1 Year Connector Type: SC/UPC Simplex

    1271nm - 1331nm 4 Channel CWDM Mux Demux Slot Type Optical Multiplexer Passive Equipment



    CWDM( coarse wavelength division multiplexer) Mux Demux module takes advantage of thin film coating and we provide full range of CWDM from 1270nm~1610nm, which are equipped with non-flux bonding micro optics packaging. Our CWDM Mux Demux series offer up to 16 Channel or even 18-Channel transmitted or multiplexing on a single fiber, we always add " Skip Component" in order to reduce the insertion loss when it applied in WDM solutions.


    1) Line Monitoring

    2) WDM network

    3) Telecommunication

    4) Cellular Application

    5) Fiber optical amplifier

    6) Access Network



    1) 2, 4, 8, 16 or 18 CWDM Wavelengths Optional
    2) Color Coded Equipment Ports for Ease of Installation
    3) Reliable Passive Thin Film Filter WDM Optical Technology
    4) Low Optical Insertion Loss, Expoxy-Free in Optical Path
    5) Telcordia (Bellcore) GR-1221-CORE


    Ordering Information




    First Channel

    Fiber Type

    Pigtail Dia.
    Pigtail Length


    Connector Type


    0102=1Com, 2Out



    09=0.9mm 05=50cm A6 FU(A)=FC/UPC(APC)

    0204=2Com, 4Out




    20=2mm 10=100cm B2(3) SU(A)=SC/UPC(APC)
    MD=M&D / 30=3mm C2(3,4)

    0118=1Com, 18Out


        20=200cm D(1,2,3,4) LU(A)=LC/UPC(APC)

    0218=2Com, 18Out




    Package and Mounting Dimension (mm)

    Stainless Steel Tube (A) Plastic Box (B) Aluminum alloy Box (C) Aluminum alloy Rack (D)
    Outline Outline Outline Mounting Outline Mounting Outline
    A1=Φ3x50 A5=Φ5.5x34 B1=90x20x9.5 50x12x2Φ3.2 C1=85x18x8.4 44.5x13x2Φ3



    A2=Φ3x54 A6=Φ5.5x38 B2=100x80x10 70x73.5x4Φ3.2 C2=90x72x8 86x68x4Φ3



    A3=Φ3x60 A7=Φ5.5x50 B3=120x80x18 80x74.5x4Φ3.2 C3=110x95x7.5 99x84x4Φ3.5


    (19’ Rack)

    A4=Φ5x70 A8=Φ5.5x64 B4=141x115x18 100x106x4Φ3.2 C4=110x95x15 99x84x4Φ3.5


    (19’ Rack)


    Item M/D M&D
    X(CWDM Channel)+1(1310±50/EXP) 1 2 4 8 8+1 16 18 1 2 4 8 8+1 16 18
    Bare Fiber/φ0.9 Stainless A6 / / / / / / / / / / / / /
    φ0.9(φ2,φ3) Plastic Box B1 B2 B2 B2 B2 B3 B3 B2 B2 B2 B3 B3 B4 B4
    φ0.9(φ2/φ3) Aluminum Alloy Box C1 C2 C2 C3 C3 C3 C3 C2 C2 C3 C4 C4 / /
    LGX D1 D1 D1 D1 D2 D2 D2 D1 D1 D2 D2 D2 D2 4U
    19 Inches Rack D3 D3 D3 D3 D3 D3 D3 D3 D3 D3 D3 D3 D3 D3


    Operating Wavelength(nm) ITU-T Grid Parameter Unit Value
    Channel Space(nm) 20 Fiber Type / SMF-28e/ SMF-28e XB
    Channel Number 1 2 4 8 8+1 16 18 Directivity dB >40
    Passband@0.5dB >14.0 Return Loss dB >40
    Passband Flatness <0.50 Pigtail Dia. mm 0.25/0.9 / 2 / 3
    Max IL(In->TX@λPB) 0.8 1.4 2.0 3.0 3.4 4.8 6.0 Pigtail Length cm >50
    Max IL(In->Express@λother) 0.6 1.8 2.4 3.4 3.8 5.4 / Power Handing mW <500
    Isolation(Adjacent) >30 Operating Tem. -20~ +70
    Isolation(Non-Adjacent) >45 Storage Tem. -40~ +85
    Insertion Loss Temperature Sensitivity (dB/℃) <0.005 /    
    Wavelength Temperature Shifting(nm/℃) <0.002      
    PDL (Max) 0.1 0.1 0.15 0.2 0.2 0.25 0.3      


    Carton Packing

    4 Channel CWDM Mux Demux Slot Type For Line Monitoring / WDM Network , 1271nm - 1331nm


    Our Service

    1. A well-trained sales team for good communication and high-effective working.

    2. A well-experienced engineering team offering the professional technical support and the most flexible customization to realize the demands of each customer.

    3. Strict quality control from raw materials to the end products, ensure productive working and high quality.

    4. All products passed CE, RoHS certificates.

    5. A well-equipped factory with more than 50 staffs enable fast delivery time for market demands.

    6. we support our customer from small quantity to big quantity, become our partner to work together for win-win.



    1. What kind of payment term you can accept?

    We can accept T/T, Western Union.

    2. What is the lead time?

    Generally 3~7 working days after getting the payment.

    3. How long will it take before I get my goods?

    The estimated delivery time is 3~7 days by express

    4. What is the MOQ?

    The MOQ is 5pcs (Note: we can provide sample for testing!!!)

    5. Can you support OEM service?

    Yes, that’s for sure. Please kindly provide us all necessary information for OEM order

    Contact Details
    Wuhan Seifree Technology Co., Ltd

    Contact Person: lydia.yuan

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