ARINC Fiber Optic Termini

Amphenol Military & Aerospace ARINC Fiber Optic Termini are high‑reliability optical termination elements built for integration into ARINC‑compatible circular and rack‑and‑panel connectors. Developed by Amphenol Fiber Systems International (AFSI), these termini provide the precise fiber alignment required for consistent optical performance in aircraft, naval, and ground‑platform data networks.

Design and Construction

Each termini incorporates a precision ceramic ferrule and spring‑biased retention system that maintains fiber‑to‑fiber contact and compensates for thermal and mechanical movement. This construction reduces optical insertion loss and preserves return‑loss stability during vibration and temperature cycling typical of harsh‑environment service.

Standards and Compatibility

• Compatible with ARINC 600 and ARINC 801 connector interfaces
• Geometry derived from MIL‑T‑29504 optical termini for interchangeability
• Available for both single‑mode and multimode fiber types

Integration and Application

ARINC Fiber Optic Termini seat directly into connector cavities within Amphenol’s avionics and mission‑system interconnect families. They support modular optical harnessing strategies where termini can be serviced or replaced without reworking the entire connector. Common use cases include aircraft avionics backplanes, flight‑critical communication buses, radar processing links, and shipboard sensor networks.

Engineering Benefits

• Precise optical alignment using ceramic ferrule technology
• Rugged spring‑loaded retention for vibration endurance
• Low insertion loss and repeatable optical geometry after multiple mating cycles
• Support for crimp, epoxy‑polish, or field‑repairable termination methods

Selection Guidance

Engineers can select ARINC Fiber Optic Termini when designing optical links within ARINC‑style connectors or upgrading mixed‑signal configurations to fiber‑optic transmission. The termini’s durability and maintainability make it well‑suited for mission‑critical environments requiring consistent optical performance under demanding operational conditions.