Title :
Fiber ring laser with flint glass fiber and its sensor applications
Author :
Takahashi, Yoshitaka ; Yoshino, Toshihiko
Author_Institution :
Dept. of Electron. Eng., Gunma Univ., Japan
fDate :
4/1/1999 12:00:00 AM
Abstract :
A new fiber ring laser has been proposed which is composed of a laser diode amplifier, a flint glass fiber as a sensing element, and a Faraday cell as a bias element, and applied to a frequency-domain sensor in which nonreciprocal effects such as current or rotation can be measured from a frequency change in the beat signal. A sign of current or rotation direction can be determined and a lock-in phenomenon is avoided owing to the bias element
Keywords :
Faraday effect; electric current measurement; fibre lasers; fibre optic sensors; optical glass; ring lasers; semiconductor optical amplifiers; Faraday cell; beat signal; bias element; electric current measurement; fiber ring laser; flint glass fiber; frequency chang; frequency-domain sensor; laser diode amplifier; lock-in phenomenon; nonreciprocal effect; optical fiber sensor; rotation direction measurement; Current measurement; Diode lasers; Fiber lasers; Frequency measurement; Glass; Laser transitions; Optical fiber sensors; Ring lasers; Rotation measurement; Sensor phenomena and characterization;
Journal_Title :
Lightwave Technology, Journal of
