Stress Birefringence in Photonic Crystal Fibers Used in a Novel Field Installable LC Type Optical Connector
Photonic crystal fibers (PCFs) have recently attracted a great deal of interest because of their unique characteristics and many controllable features. They include a wide range of single mode operation, highly birefringent characteristics (~10-3), high-power light transmission, etc. The field-installable LC connectors tend to be of the larger connector types in the fiber-to-the-home (FTTH) distribution units. In these designs, fibers are clamped inside a splice assembly and are stressed within the connector. In this research, we first developed a novel cam-type mechanism for field-use LC connector. The fiber stress was analyzed via a commercial available finite element program. The stress birefringence distributions of single mode fiber and air-silica based PCFs were calculated by stress photoelastic effect. We further studied the effect of air-hole size on the stressinduced birefringence of PCFs. The results indicate that stress-induced birefringence decreases as air-hole size increase. On the other hand, the birefringence increases as applied clamping force increases on the single mode fiber.
Guo Fan JIN, Wing Bun LEE, Chi Fai CHEUNG and Suet TO
S. I. E. Lin, "Stress Birefringence in Photonic Crystal Fibers Used in a Novel Field Installable LC Type Optical Connector", Key Engineering Materials, Vols. 364-366, pp. 404-407, 2008