1 June 2017 Theoretical and experimental study of the photoelastic effect in channel waveguides in a diaphragm of LiNbO3
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Abstract
The ability of the photoelastic effect in optical waveguides fabricated by Ti diffusion in a diaphragm of LiNbO 3 for using as a pressure sensor has been investigated. We have studied the polarization rotation and phase difference between TE and TM polarizations for the light transmitted from the waveguide that are induced by the external pressure. We have also studied the effect of position of the waveguides in the diaphragm on the pressure sensor’s sensitivity. The polishing technique has been used to reduce the thickness of the diaphragm to 0.2 mm in order to increase the sensor’s sensitivity to about P π = 170    kPa , which is equivalent to the pressure required for inducing phase difference of π rad between the TE and TM polarizations.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Maryam Ali Akbar Ganji, Reza Asadi, "Theoretical and experimental study of the photoelastic effect in channel waveguides in a diaphragm of LiNbO3," Journal of Micro/Nanolithography, MEMS, and MOEMS 16(2), 025502 (1 June 2017). https://doi.org/10.1117/1.JMM.16.2.025502 . Submission: Received: 21 February 2017; Accepted: 16 May 2017
Received: 21 February 2017; Accepted: 16 May 2017; Published: 1 June 2017
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