A low-cost and fast wavelength measurement method based on Faraday rotation effect

Author

Enmei Shan ; Yi Li ; Ben Xu ; Changyu Shen ; Chunliu Zhao ; Xinyong Dong ; Shangzhong Jin

Author_Institution

Coll. of Opt. & Electron. Technol., China Jiliang Univ., Hangzhou, China

fYear

2015

Firstpage

1

Lastpage

3

Abstract

A low-cost and fast wavelength measurement method based on Faraday rotation effect is proposed in this study. This laser wavelength measurement method is mainly performed by a specially designed fiber magneto-optic device and a balanced detector. When the linearly polarized lights with different wavelengths pass through the magneto-optic crystal, their polarization planes will be rotated at different angles, then the light wavelength can be measured by detecting the rotated angles. In our experiments, the highest wavelength resolution can reach 2.1pm within a measurement range of ~7.8nm. This new method has the advantages of low-cost, compact structure and capability of fast measurements.

Keywords

Faraday effect; fibre optic sensors; laser variables measurement; light polarisation; magneto-optical devices; Faraday rotation effect; balanced detector; fast wavelength measurement method; fiber magneto-optic device; laser wavelength measurement method; linearly polarized lights; low-cost wavelength measurement method; magneto-optic crystal; polarization planes; Crystals; Faraday effect; Optical fiber communication; Optical fibers; Temperature control; Temperature measurement; Wavelength measurement; Faraday rotation effect; Fiber optics components; optical design of instruments;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Communications and Networks (ICOCN), 2015 14th International Conference on

Conference_Location

Nanjing

Type

conf

DOI

10.1109/ICOCN.2015.7203613

Filename

7203613