Optical Sub-Assemblies

MACOM’s optical sub-assemblies (OSA) are focused on enabling our customers high performance/high bit rate optical transceivers operating at 100G and beyond. Our current 100G TOSA integrates 4 channels of 25/28G DFB lasers or EML’s with driver IC and a low loss optical MUX.  Our current 100G ROSA integrates four PIN photo-detectors, a quad TIA, and a low loss optical DEMUX. MACOM’s optical sub-assemblies are key components servicing the next generation metro/longhaul networks, datacenter interconnect (DCI) applications, mobile backhaul networks, and high end router/switch applications.

Product Categories

Transmitter Optical Sub-Assembly (TOSA)
Receiver Optical Sub-Assembly (ROSA)



The FBT4820AG is high performance and low power consumption 4 x 25G 1310 nm LAN-WDM Transmitter Optical Sub-Assembly (TOSA), consisting of an optical multiplexer to combine 4 wavelength light signals, highly-reliable cooled direct modulated lasers (DMLs) and quad laser driver.