Contribution of butt-joint connectors and lens connectors to the radiation induced loss of optical fibre cables at 1300 nm wavelength

摘要

Connectors may remarkably contribute to the radiation induced loss of optical fibre cables when, e.g., the fibers are fixed with thicker layers of epoxy resin (radiation induced swelling) or when the glass of lens connectors is of poor quality. The authors have tested a variety of different butt-joint as well as lens connector pairs. After a gamma dose of 10/sup 4/ Gy direct connectors contributed or approximately=0.3 dB to the total loss, compared with between 0.3 and 0.6 dB for lens connectors.