The Raychem MTCT modular rectangular connectors from Tyco Electronics accept standard ARINC 801 LuxCis optical termini in a compact, lightweight design. Since many aerospace applications use four optical fibers, the four-position connector eliminates the need to plug or seal unused contact cavities as would be required with common 12-termini systems. The result is significant space and weight savings. The connectors come with aluminum or corrosion-resistant steel shells, quarter-turn bayonet quick disconnect or jackscrew mating hardware, keying, and a fluorosilicone interfacial seal. Enhanced mating interface ensures optical alignment of termini.