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Red/Blue Filter WDM
GEZHI DWDM Red/Blue filter WDM is based on thin-film filter technology and patented athermal platform for optical devices. This device offers a flat and wide passband, low insertion loss, and high isolation, which makes this device ideal for high-power Optical Amplification Systems and DWDM Network applications.

  • 3 Port C band DWDM Red/Blue Filter WDM device


    GEZHI DWDM Red/Blue filter is a thin-film filter device. It is a three-port device. One port is called the "Common." The other two ports provide the conduit for the two wavelength "bands." 


    The two bands are  the Red (λ>1547 nm) and the Blue (λ<1543 nm) 

    One band goes thru the Reflected leg, and the other band goes thru the Pass leg.


    Typically, however, the device is used as a two-way (i.e.  bidirectional) WDM. One band is sent to the Common leg, while the other band is delivered from the Common leg.  (see example diagram)In a DWDM module, which uses a Red/Blue filter, a Mux may be combined with a Demux. 


    For example, the Mux combines DWDM channels in the  Red band, while the Demux separates DWDM channels  in the  Blue  Band.     Using a Red / Blue  fillter,  one  can    combine  the  Red  Transmit  channels  and   the   Blue  Receive channels onto a single fiber.

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    Example of a Red/Blue WDM in bi-directional usage.


           Features                                                                                    Application

    Ø Low Insertion Loss                                                                   Ø WDM Network

    Ø Wide Pass Band                                                                      Ø Line Monitoring

    Ø High Channel Isolation                                                              Ø Telecommunication

    Ø High Reliability                                                                         Ø Testing Instruments


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    DWDM Red/Blue Band Filter                   DWDM Red/Blue Band Filter            DWDM Red/Blue Band Filter with

      with Stainless steel tube                        with Plastic ASB box Package            19" 1RU Rack mount package


    Performance Specifications

    Type

    FWDM

    Pass Channel Wavelength

    nm

    1547~1561 (Red)

    1530~1543.2 (Blue)

    Reflection channel Wavelength

    nm

    1530~1543.2 (Blue)

    1547~1561 (Red)

    Pass Channel insertion loss

    dB

    ≤0.60

    Reflection Channel insertion loss

    dB

    ≤0.40

    Channel Ripple

    dB

    ≤0.3

    Adjacent channel isolation

    dB

    ≥30

    Express channel isolation

    dB

    ≥12

    PDL

    dB

    ≤0.1

    PMD

    Ps/nm

    ≤0.1

    Directivity

    dB

    ≥55

    Return loss

    dB

    ≥50

    Power Handling

    mW

    300

    Operating temperature

    -5~+70

    Storage temperature

    -40~+85

    Package Dimensions

    mm

    φ5.5x34

    Note: 1. Customization is available. 

    2. Insertion loss does not include connector, each connector will add 0.2dB loss.

    3. Other wavelength can be made upon customer’s request. For example, L-Band R/B, C/L Band.

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    Ordering Information

    Wavelength

    Package Spec

    Fiber Type

    Fiber Diameter

    Fiber Length

    Connector

    R/B=Red/Blue Wavelength

    1= Φ5.5mm×34mm

    2= 90×20×10 mm

    3=100×80×10.5 mm

    4= 120×80×18 mm

    5=140×115×18 mm

    6=19”1U Rackmount

    X= Others

    9=9/125

    X=Others

    25=250um

    90=900um

    20=2.0mm

    30=3.0mm

    X=Others

    05=0.5m

    10=1.0m

    15=1.5m

    X=Others

    OO=None

    FP=FC/PC

    FA=FC/APC

    SP=SC/PC

    SA=SC/APC

    STP=ST/PC

    STA=ST/APC

    LP=LC/PC

    LA=LC/APC

    X=Others