Finisar

Finisar

Finisar was a leading manufacturer of optical communications components and modules, recognized globally for its fiber optic transceivers, active optical cables, and wavelength-selective switches. Founded in 1987 and headquartered in Sunnyvale, California, Finisar became one of the world's largest suppliers of optical transceiver modules for data communications and telecommunications before being acquired by II-VI Incorporated in 2019.

Finisar's product portfolio spanned short-range data center interconnects to long-haul and coherent optical transceivers, supporting interfaces from Gigabit Ethernet through 10G, 40G, 100G, and beyond. Their modules adhered to industry-standard form factors including SFP, SFP+, QSFP+, QSFP28, and CFP, ensuring compatibility with networking and test equipment from major vendors worldwide.

Key Product Lines

• 100G QSFP28 Transceivers — high-density 100 Gigabit optical modules for data center and telecom network applications
• SFP and SFP+ Modules — small form-factor pluggable transceivers for Gigabit and 10G Ethernet links
• Active Optical Cables — high-speed fiber interconnects for short-range data center clustering and HPC

Industries Served

Finisar modules were widely deployed in telecommunications carrier networks, hyperscale data centers, enterprise networking infrastructure, and high-performance computing environments. Their transceivers are also used in test and measurement setups for validating optical link performance and compliance.