Effect of polarization sensitivity on ultrasmall silicon-on-insulator-based arrayed waveguide grating for fiber Bragg grating sensor interrogation

Authors

Hongqiang Li, Tianjin Polytechnic UniversityFollow
Rui Xie, Tianjin Polytechnic University
Yanhua Hong, Bangor University
Zanyun Zhang, Tianjin Polytechnic University
Cheng Zhang, Tianjin Polytechnic University
Chunxiao Tang, Tianjin Polytechnic University
Enbang Li, University of WollongongFollow

RIS ID

128758

Publication Details

Li, H., Xie, R., Hong, Y., Zhang, Z., Zhang, C., Tang, C. & Li, E. (2018). Effect of polarization sensitivity on ultrasmall silicon-on-insulator-based arrayed waveguide grating for fiber Bragg grating sensor interrogation. Optical Engineering, 57 (6), 065103-1-065103-7.

Abstract

Polarization sensitivity is an important factor that affects the interrogation of ultrasmall arrayed waveguide grating (AWG) for fiber Bragg grating (FBG) sensor. An ultrasmall 1  ×  8 silicon-on-insulator (SoI) AWG with a core size of less than 530  μm  ×  480  μm is proposed in this study. This ultrasmall SoI AWG exhibits good transmission spectra and high polarization sensitivity. The increased channel numbers and tight structure increase the polarization sensitivity of AWG. Temperature interrogation experiments show that the FBG sensor interrogation is drastically affected when the effect of polarization sensitivity on the ultrasmall AWG is sufficiently large.