Permanent photoinduced birefringence in a Ge-doped fiber

• DOI: 10.1063/1.105097
• Publication Date: 2002-07-26T12:42:02Z
• Authors: François Ouellette; Daniel Gagnon; Michel Poirier
• Keywords: 0103 physical sciences; 01 natural sciences

We report the observation of permanent photoinduced birefringence in a Ge-doped fiber exposed to cw mode locked at 532 nm. This effect is enhanced by increasing Ge concentration core fiber, or submitting it thermal hydrogen treatment. The however very weak, nonexistent, with irradiation 514 488 nm argon laser light.