Author: Yang, Zongru
Title: Investigation of the tilted fiber bragg grating
Advisors: Yu, Changyuan (EIE)
Degree: M.Sc.
Year: 2019
Subject: Hong Kong Polytechnic University -- Dissertations
Optical fibers
Bragg gratings
Optical fiber detectors
Department: Department of Electronic and Information Engineering
Pages: ix, 55 pages : color illustrations
Language: English
Abstract: Fiber gratings have developed into a mature technology with a wide range of applications in various areas. The Tilted Fiber Bragg Grating (TFBG) is a special structure of passive components. It has many advantages such as light weight, small size, anti-electromagnetic interference and reusability. With a tilt angel, the incident core mode light can be couple to cladding modes, which have differential response for each mode that can be used to multiply the sensing modalities. Therefore, it has opened up a new world in the field of optical fiber communication and sensing. In this paper, the history and theory of TFBGs are introduced at first. In the next, OptiGrating optical simulation software is used to simulate the reflectivity and transmittivity spectrums with different structures of the TFBG and different environmental refractive indices, then corresponding spectrum changes can be obtained. In addition, FBGs and TFBGs are written for analysis, in which a good linear characteristic between wavelength shift and axial strain is obtained by observing their reflectivity spectrums. However, due to the low quality of transmittivity spectrum of TFBGs (almost no cladding modes can be seen), the further analysis of TFBGs cannot be completed.
Rights: All rights reserved
Access: restricted access

Files in This Item:
File Description SizeFormat 
991022270855903411.pdfFor All Users (off-campus access for PolyU Staff & Students only)2.82 MBAdobe PDFView/Open

Copyright Undertaking

As a bona fide Library user, I declare that:

  1. I will abide by the rules and legal ordinances governing copyright regarding the use of the Database.
  2. I will use the Database for the purpose of my research or private study only and not for circulation or further reproduction or any other purpose.
  3. I agree to indemnify and hold the University harmless from and against any loss, damage, cost, liability or expenses arising from copyright infringement or unauthorized usage.

By downloading any item(s) listed above, you acknowledge that you have read and understood the copyright undertaking as stated above, and agree to be bound by all of its terms.

Show full item record

Please use this identifier to cite or link to this item: