Work

All-optical rewritable birefringence on azopolymer-coated optical fiber tips

Year: 2026

Type: article

Abstract: In this work, we present a novel method to induce and tune birefringence on an optical fiber tip by using a deposited layer of the azopolymer PAZO. The birefringence was written and erased with a pump laser at 532 nm, and read with a probe laser at 1550 nm. Maximum birefringence values of 0.060 ± 0.003 were achieved with the pump laser turned on, stabilizing at 0.058 ± 0.003 with the pump laser turned off. Phase differences in the order of a quarter-wave plate were also attained with Δϕ = 0.5770π ± 0.0004π, for the highest thickness sample. The proposed device is simple to fabricate, has good reproducibility between measurements, and shows promising potential for applications requiring polarization control in optical fibers.

Source: Optical Fiber Technology

DOI: 10.1016/j.yofte.2026.104849

Authors: Beatriz Gomes Soares, Susana Silva, Paulo Ribeiro, Orlando Frazão

Institutions: INESC TEC, Universidade Nova de Lisboa

Language: English

Topic: Photorefractive and Nonlinear Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $2,360

Funder: Fundação para a Ciência e a Tecnologia