Polarization induced non-reciprocal phase controlled all-fiber loop mirror based inclinometer

Momosaki, Ryusei; Kumar, Ashish; Kumar, Naveen; Ojha, N.

doi:10.1016/j.optlastec.2018.11.012

Cited by 7 publications

(1 citation statement)

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“…The proposed inclinometer based on tFBG in a FRL system was compared with other inclinometers like those described in references [ 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 ]. The inclination angle range is shown in Table 1 .…”

Section: Discussionmentioning

confidence: 99%

A Temperature Independent Inclinometer Based on a Tapered Fiber Bragg Grating in a Fiber Ring Laser

Lin

Zhou

Shao

et al. 2021

Sensors

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We demonstrate a new concept for an all-fiber inclinometer based on a tapered fiber Bragg grating (tFBG) in a fiber ring laser (FRL) with the capability of measuring the tilt angle and temperature simultaneously. The sensor performance is analyzed theoretically and investigated experimentally. The dependence of tilt angle on the spectral response in variable temperature conditions was measured. Two inclinometers with different lengths have been fabricated and characterized in FRL. The sensitivity is 0.583 dB/° and 0.849 dB/°, respectively, in the range of 0° to 90°. Thanks to the FRL system, narrow 3-dB bandwidth (<0.1 nm) and high optical signal-to-noise ratio (~60 dB) are achieved. The tFBG in the FRL system can be used for working as a temperature insensitive inclinometer. The results suggested that the proposed inclinometer has the advantages of compact size and convenient manufacture, enhancing its potential for application prospect.

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