Ubiquiti UACC-CWDM-8 CWDM Multiplexer Demultiplexer

Overview

The Ubiquiti UACC-CWDM-8 is a passive optical multiplexer/demultiplexer that consolidates eight CWDM wavelengths (1450, 1470, 1490, 1510, 1530, 1550, 1570, and 1590 nm) onto a single fiber pair. This eliminates the need for separate fiber runs when you need to transport multiple independent data streams—common in long-haul network infrastructure where fiber is expensive or routing is constrained. The unit operates entirely passively (no power supply, no management overhead), making it a drop-in component for fiber backbone consolidation in data center, campus, and carrier-grade deployments.

Compatibility

The UACC-CWDM-8 integrates with Ubiquiti fiber networking systems and any CWDM-compatible optical transport equipment supporting the 1450–1590 nm band. It uses industry-standard LC/UPC connectors (0.9 mm) on all ports: one COM (common), one MON (monitor), one EXP (expansion), and eight wavelength-specific ports. Fiber type is SMF-28e with pigtail lengths from 0.5 to 1 m. If you're building a multi-wavelength backbone using Ubiquiti SFP+ transceivers or third-party CWDM optics, verify your equipment's center wavelengths align with the mux channels.

Installation Notes

The UACC-CWDM-8 ships as a compact metal enclosure (442 × 120 × 43.7 mm) and can be rack-mounted or shelf-mounted. Operating temperature range is -30 to 75°C; storage is -40 to 90°C—suitable for outdoor cabinets and unheated shelters. Each channel handles a maximum of 500 mW optical power; insertion loss is capped at 2.5 dB (max), keeping signal degradation minimal across the link. Adjacent-channel isolation is 30 dB minimum; non-adjacent is 40 dB minimum, preventing crosstalk between wavelengths. Return loss is 50 dB (minimum), ensuring stable reflection performance. Polarization-dependent loss is <0.1 dB, so fiber bend or stress won't degrade signal quality noticeably.