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The adjacent channels of CCWDM use parallel beams to cascade in free space instead of using optical fibers. Without the fiber used in cascade, the size of CCWDM package can reach 70x60x7mm, which is about 4 times smaller than that of standard CWDM package.

CCWDM optical module is widely used in the fields of coarse wavelength division multiplexing system, PON network, CATV link, telecommunication network, enterprise network, metropolitan area network WDM system, 4G/5G communication mobile system,100G solution, access network, metropolitan area network WDM system, optical fiber tools and so on.

Feature of CCWDM-(18ch)

  • Low insertion loss

  • Wide pass band

  • High channel isolation

  • High stability and reliability

  • Epoxy free on optical path

  • CWDM grid

Applications of CCWDM-(18ch)

  • Broadband Systems

  • Optical Add/Drop Multiplexing

  • Metro/Access Communication

  • Networks

  • Fiber Optic Instruments

Specification of CCWDM-(18ch)




Center Wavelength


Channel Spacing

20 nm

Channel Passband

±6.5 nm

Insertion Loss(CWDM.Port)


Adjacent Channel Isolation

≥ 30 dB

Non-adjacent Channel Isolation

≥ 40 dB

Filter Technology

TFF (Thin Film Filter)

Passband Ripple

≤ 0.5 dB

Return Loss

≥ 45 dB


≥ 50 dB

Polarzation Dependent Loss

≤ 0.3 dB

Power Handling

≤ 300 mW

Operating Temperature

-40°C~ +85°C

Storage Temperature

-40°C~ +85°C

Fiber length


Fiber Type

Corning G657A2

Pigtail and Connector Type

0.9mm loose tube with LC/UPC connector

Package Dimension

(L)70×(W)60×(H)7mm Aluminium alloy box

Note: Losses above include connector loss and adapter loss.

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