Lynx Technik yellobrik OCM 1891 9 Channel CWDM Optical Mux/Demux (1270-1430nm)

The Yellobrik OCM 1891 is a compact, passive 9-channel CWDM optical multiplexer/demultiplexer designed to transmit and receive up to nine individual signals over a single fiber link. Covering wavelengths from 1270 nm to 1430 nm, this module features an Upgrade (UPG) port that allows expansion to 18 channels when connected to the OCM 1892 module. Its passive operation requires no power, making it an efficient solution for increasing fiber capacity in broadcast and professional video applications.

Key Features

• Transmits and receives up to 9 channels over a single fiber link
• Covers wavelengths from 1270 nm to 1430 nm (ITU-T G.694.2)
• Passive operation requiring no external power
• Expandable to 18 channels by combining with the OCM 1892 module via the UPG port
• LC/PC single-mode optical connections for reliable performance
• Optional ½ RU 19” rack frame (RFR 1018) for organized module integration

Technical Specifications

Optical I/O

• 9 x Fiber Optic I/O channels with center wavelengths at 1270 nm, 1290 nm, 1310 nm, 1330 nm, 1350 nm, 1370 nm, 1390 nm, 1410 nm, and 1430 nm (per ITU-T G.694.2)
• 1 x COM (common) connection for multiplexed I/O
• 1 x UPG (Upgrade) I/O connection to interface with the OCM 1892 module
• LC/PC connectors suitable for single-mode fiber (SMF)
• Channel insertion loss: Nominal 1.35 dB, Maximum 2.7 dB
• UPG insertion loss: Nominal 1.35 dB, Maximum 2.7 dB
• Polarization dependent loss: Maximum 0.2 dB
• Return loss: Greater than 45 dB
• Isolation (to adjacent channel): Greater than 30 dB
• Directivity: Greater than 55 dB
• Temperature-dependent loss: Less than 0.005 dB/ºC
• Temperature-dependent change of wavelength: Less than 0.003 nm/ºC
• Maximum input power: 500 mW
• Supports single or full duplex operation

Power

• None required (passive operation)

Physical

• Dimensions: Length 100 mm (3.93”), Width 130 mm (5.12”), Height 19 mm (0.75”) including connectors
• Weight: 140 g (4.9 oz)