Specifications:
The CWDM device from Henan Shijia Photons Technology Co., Ltd. operates within a wavelength range of 1260 to 1620 nm, with options for narrower ranges. It follows the ITU-T grid for center wavelength and has a channel spacing of 20 nm. The bandwidth is +/-6.5 nm. Maximum pass insertion loss is ≤0.7 dB (≤1.0 dB with connectors), and maximum reflection insertion loss is ≤0.5 dB (≤0.8 dB with connectors). Ripple is ≤0.5 dB, with adjacent isolation ≥30 dB and non-adjacent isolation ≥45 dB. Polarization-dependent loss is ≤0.1 dB, return loss is ≥50 dB, and directivity is ≥50 dB. The device can handle power up to 500 mW and operates within a temperature range of -40 to +85°C, with the same range for storage.

Technology:
The device utilizes thin film filter technology to allow multiple optical wavelengths to transmit signals through a single optical fiber or to separate multiplexed signals. By cascading 3-port components, a multi-channel module is achieved.