1460 - 1620nm 1260 - 1620nm Coarse Wavelength Division Multiplexers

The GK-CWDM Series by GKER Photonics Co., Ltd. is a high-performance Coarse Wavelength Division Multiplexer designed
to meet Telcordia standards. These devices utilize environmentally stable thin film filter technology combined with advanced packaging methods, ensuring wide passband, low insertion loss, and high channel isolation. The GK-CWDM Series is ideal
for CWDM systems, offering the flexibility to be used individually for single-channel add or drop functions, or cascaded for
multi-channel applications.
With a broad operating wavelength range from 1260 nm to 1620 nm, the series is available in both Half Band and Full Band options, covering all key CWDM wavelengths. The typical insertion loss is maintained at a minimal 0.5 dB, with excellent
adjacent channel isolation of 25 dB and a return loss of 50 dB. The devices are engineered for high environmental stability,
making them reliable in varying temperature conditions from -5°C to +70°C.
Key Features
High Channel Isolation
Low Insertion Loss
Applications
CWDM System
Specifications

¹IL is 0.3 dB higher, RL is 5 dB lower for each connector added.

²All of above value are tested at room temperature @ 23 ºC, unless other specified.

Package Dimensions
Ordering Information

GK-CWDM-1-2-3-4-5

1.Center Wavelength

1471 - 1471 nm

1491 - 1491 nm

1511 - 1511 nm

1531 - 1531 nm

1551 - 1551 nm

1571 - 1571 nm

1591 - 1591 nm

1611 - 1611 nm

SS - Specify

2.Connector Type

1 - FC/UPC

2 - FC/APC

3 - SC/UPC

4 - SC/APC

N - None

S - Specify

3.Fiber Jacket

B - 250 µm Bare Fiber

L - 900 µm Loose Tube

S - Specify

4.Fiber Length

1 - 1.0 m

S - Specify

5.Filter Type

H - Half Band

F - Full Band