Polarization-Differential Loss Enabled High Polarization Extinction in Hollow-Core Fibers

2025/12/30 by Yizhi Sun, Shoufei Gao, Xiangqi Wang +5 · 1 voice
Physics and Astronomy · #physics.optics

paper · pdf · doi:10.1364/optica.591131

Abstract

Delivering a well defined state of polarization over hollow core fibres (HCFs) is pivotal for next generation ultra stable photonic systems. Yet in all existing HCFs, whether birefringent or not, their polarization extinction ratio (PER) rapidly deteriorates during propagation or under mechanical disturbance, leaving no practical high and stable PER solution. Here, we break this impasse by embedding a polarization differential loss (PDL) mechanism directly into the cladding architecture.

Citations

• Four-fold truncated double-nested anti-resonant hollow-core fibers with ultralow loss and ultrahigh mode purity
• Navigation-grade interferometric air-core antiresonant fibre optic gyroscope with enhanced thermal stability

Discussions

• 365 Days of arXiv, Day 5. Yizhi Sun et al., arXiv:2512.2451 A hollow-core fiber is designed where polarized modes in an undesired direction are rapidly attenuated. The fiber is capable of maintaining [bsky, 2 points, 0 comments]