Manufactures and supplies passive fiber-optic components as well as test instruments. Offers high-quality fused couplers, patch cords and pigtails, connectors and adapters, attenuators, collimators, circulators, isolators, optical switches, light sources, power meters, visual fault locators, cable fault locators, mini-OTDRs, and other test instruments. Also offers coupler workstation systems for fused coupler manufacturers and researchers.