臺灣博碩士論文加值系統

波分複用 (WDM) 是一種可以與光分插復用 (OADM) 設備結合使用的技術，從而在波分複用 (WDM) 網絡中實現更高的連接性和靈活性。用於增加（增加）和減少（減少）包含在通信鏈路中的波長的設備之一是 OADM。為了確定所需的波長，需要一個反射器，即光纖布拉格分級 (FBG)。該反射器將在軟件中進行模擬，以進行理論/數學分析。在本研究中，將進行布拉格非對稱譜分析
。在這個分析中需要耦合模式理論來獲得頻譜源。所使用的格子光纖類型是單模光纖中的均勻型。然後進行數學分析，找出反射率值和光纖布拉格光柵透射率。進行數學分析後，接著在軟件中進行模擬以獲得頻譜

Wavelength Division Multiplexing (WDM) is a technology that can be combine with Optical Add Drop Multiplexing (OADM) devices, this results in greater connectivity and flexibility in Wavelength Division Multiplexing (WDM) networks. One of the devices used to increase (add) and decrease (drop) the wavelength contained in the communication link is OADM. To determine the desired wavelength a reflector is needed, namely Fiber Bragg Grading (FBG). This reflector will be simulated in software to be analyzed theoretically / mathematically. In this study, a Bragg asymmetric spectrum analysis will be carried out. In this analysis required the coupled mode theory to get the spectrum source. The type of lattice fiber used is the uniform type in single mode optical fiber. Then perform a mathematical analysis to find the reflectivity value and Fiber Bragg Grating transmissivity. After doing the mathematical analysis, it is followed by a simulation in the software for get the spectrum.

Abstract.............................................i
摘要..................................................ii
Acknowledgments.......................................iii
Table of Contents.....................................iv
List of Figures.......................................vi
List of Table.........................................vii
Chapter 1 Introduction................................1
1.1 Introduction......................................1
1.1.1 Fiber Bragg Grating.............................1
1.1.2 Light transmission in optical fiber.............1
1.1.3 Light propagation in optical fibers.............2
1.1.4 Refractive Index................................2
1.2 Outline of the thesis.............................3
Chapter 2.............................................4
General Concept of Optical Waveguide Structure........4
2.1 Waveguide Structure...............................4
2.2 The working principle of fiber Bragg grating......5
2.3 Reflection spectrum of fiber bragg grating........8
Chapter 3 Design and Simulation Work..................10
3.1 Design Flowchart..................................10
3.2 Theoretical method................................11
3.2.1 Coupled mode equation...........................11
3.2.2 Transfer matrix method (TMM)....................12
3.3 Matlab Simulation.................................13
3.3 Output Spectrum...................................15
3.3 Result and Discussion.............................19
Chapter 4 Conclusion..................................20
References............................................21

1.Hassoon, O., et al., Numerical simulation of fiber bragg grating spectrum for mode-delamination detection. 2015. 9(1): p. 144-149.
2.Kashyap, R., Fiber bragg gratings. 2009: Academic press.
3.Luo, Y.-W., et al. Fabrication of a polymeric optical filter based on an asymmetric Bragg coupler with liquid crystal. in 2018 IEEE International Conference on Advanced Manufacturing (ICAM). 2018. IEEE.
4.Sharhan, A.A. Transfer Matrix Mathematical Method for Evaluation the DBR Mirror for Light Emitting Diode and Laser. in Journal of Physics: Conference Series. 2020. IOP Publishing.
5.Zhu, D., et al. Study of fiber Bragg grating reflection spectrum signal denoising. in 2015 International Conference on Automation, Mechanical Control and Computational Engineering. 2015. Atlantis Press.
6.Sun, N.-H., et al. Transmission and reflection characteristics of fiber Bragg gratings. in 2013 International Symposium on Next-Generation Electronics. 2013. IEEE.
7.Ma, T., et al., Analog signal processing in the terahertz communication links using waveguide Bragg gratings: example of dispersion compensation. 2017. 25(10): p. 11009-11026.
8.Werneck, M.M., et al., A guide to fiber Bragg grating sensors. 2013: p. 1-25.
9.Lifante, G., Integrated photonics: fundamentals. 2003: John Wiley & Sons.
10.Chai, Q., et al., Asymmetric transmission and reflection spectra of FBG in single-multi-single mode fiber structure. 2015. 23(9): p. 11665-11673.
11.Shi, W., et al., Silicon photonic grating-assisted, contra-directional couplers. 2013. 21(3): p. 3633-3650.
12.Chen, W.-P., et al., Application of a packaged fiber Bragg grating sensor to outdoor optical fiber cabinets for environmental monitoring. 2014. 15(2): p. 734-741.
13.Zhu, S., X. Zhang, and K. Chen. Bragg grating assisted coupler for add-drop filter. in 1999 Asia Pacific Microwave Conference. APMC'99. Microwaves Enter the 21st Century. Conference Proceedings (Cat. No. 99TH8473). 1999. IEEE.
14.Ghoumid, K., et al., Analysis of optical filtering in waveguides with a high index modulation using the extended coupled mode theory by hybridization of a matrix method. 2013. 289: p. 85-91.