4CH 1310nm PM DWDM Module (4-channel 1310nm polarization-maintaining DWDM module) is used to achieve multiplexing/demultiplexing of four 200G spaced wavelengths in the 1310nm O-band. The center wavelengths of the four channels are located near 1308/1309/1310/1311 nm, with a passband of λc±0.2 nm and a passband ripple of <0.5 dB. The module uses PM 1310nm polarization-maintaining fiber, 0.9 mm blue sheath, FC/APC connector, operates on slow axis, and features low insertion loss, high extinction ratio, high isolation, and high reliability. It is suitable for use as a small-channel-count DWDM front-end or module integration in a 1310nm polarization-maintaining system.

• Low Insertion Loss, Link Budget Friendly
    The insertion losses for the four channels are: CH1 ≤1.0 dB, CH2 ≤1.3 dB, CH3 ≤1.6 dB, and CH4 ≤2.0 dB, with a passband ripple of <0.5 dB. This helps maintain good OSNR and power margin, facilitating direct integration into existing systems.

• High Extinction Ratio, Excellent Polarization Performance
    Using PM 1310nm polarization-maintaining fiber, the device's extinction ratio is ≥18 dB. Combined with the FC/APC connector key alignment with the slow axis, it can stably maintain the polarization state in polarization-maintaining systems, reducing polarization-dependent noise and measurement drift, making it more friendly to polarization-sensitive applications.

• High Channel Isolation, Extremely Low Crosstalk
    Adjacent channel isolation >25 dB, non-adjacent channel isolation >35 dB, return loss ≥45 dB, directivity ≥50 dB, effectively suppressing crosstalk between channels and ports, ensuring signal quality and system stability during multi-wavelength parallel transmission.

• Mature Structure, Strong Environmental Adaptability
    Maximum optical power handling <300 mW, operating temperature range -5～+70 ℃, storage temperature -40～+85 ℃, with standard module packaging, suitable for long-term online operation and engineering deployment.

• Easy Integration and Maintenance
    Standard configuration includes 1.0±0.1 m, 0.9 mm blue Hytrel-sheathed polarization-maintaining fiber and FC/APC connectors. The standardized module size facilitates standardized installation in 1U/2U chassis or within equipment, promoting batch integration and subsequent maintenance and replacement.

• Module Dimensions

  • External Dimensions: 100 * 80 * 10 mm (Length * Width * Height), ABS box/module housing, suitable for chassis or tray mounting.

• Fiber Optics and Pigtails

  • Fiber Type: PM 1310nm Fiber (9/125/250)
  • Pigtail Length: 1.0 ± 0.1 m
  • Sheath Type: 0.9 mm Hytrel blue sleeve, for easy identification and internal wiring.

• Ports and Connectors

  • Port Type:
    • 1 * COM Common Port
    • 4 * DWDM Channel Ports (CH1～CH4)
  • Standard Connector: FC/APC (Other types available upon ordering)
  • Polarization Specification: Slow Axis Works, connector key alignment with the slow axis ensures a consistent polarization reference direction throughout the system.

• Power and Environment

  • Maximum Input Optical Power: ＜300 mW
  • Operating Temperature: -5～+70 ℃
  • Storage Temperature: -40～+85 ℃

• Broadband networks
• PON networks
• CATV system
• DWDM system