Using a wavelength tunable diode laser to measure the beat length of a birefringent fiber

Fang-Wen Sheu; Shu-Chun Yang

doi:10.1117/12.2207339

3 June 2007 Using a wavelength tunable diode laser to measure the beat length of a birefringent fiber

Fang-Wen Sheu, Shu-Chun Yang

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Proceedings Volume 9665, Tenth International Topical Meeting on Education and Training in Optics and Photonics; 96650W (2007) https://doi.org/10.1117/12.2207339
Event: Tenth International Topical Meeting on Education and Training in Optics and Photonics, 2007, Ottawa, Ontario, Canada

Abstract

In this report we demonstrated a method for measuring the beat length of a birefringent fiber. In this method the beat length is determined from the wavelength dependence of the phase difference between two orthogonally polarized modes at the output end of a sample fiber. In addition to the mode hopping of the laser diode’s optical wavelength due to the temperature variation, we have also observed the phase hopping of the output light polarization at the end face of the birefringent fiber. It is a simple and precise method to determine the birefringence magnitude of anisotropic materials in an optics laboratory course.

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Fang-Wen Sheu and Shu-Chun Yang "Using a wavelength tunable diode laser to measure the beat length of a birefringent fiber", Proc. SPIE 9665, Tenth International Topical Meeting on Education and Training in Optics and Photonics, 96650W (3 June 2007); https://doi.org/10.1117/12.2207339

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KEYWORDS

Semiconductor lasers

Laser optics

Birefringence

Polarization

Tunable diode lasers

Diodes

Fiber lasers

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