臺灣博碩士論文加值系統

摘要

在本論中我們成功的以全像干涉技術.黃光微影製程和微成型等技術.製作出非對稱布拉格光柵濾波器.此結構以布拉格反射耦合理論為基礎.我們在兩條核心填入不同的導光層材料.此結構可以增加調製波長的範圍與選擇性.此非對稱布拉格光柵濾波器的光柵週期為500nm.深度為250nm.此原件傳輸特性量測.在1600nm中心波長位置有一16dB的濾波深度.

Abstract

In this work, we successfully fabricate an asymmetric Bragg grating coupler filter using holography interference technique, soft lithography and micro molding. The mechanism is based on Bragg reflection coupled mode theory. With different material on individual core, the tuning wavelength range could be extended. The asymmetric Bragg filter has grating period of 500nm and grating depth of 250nm. The transmission characteristic shows that the filter band centered at around 1600nm. The transmission dips of grating are about 16dB.

Table of Content

English abstract........................................i
Chinese abstract.......................................ii
Acknowledgement.......................................iii
Table of contents......................................iv
List of Figures.........................................v
Symbols ...............................................vi

Chapter 1 Introduction..................................1
1.1 Development of Optical Fiber communication..........1
1.2 Motivation..........................................1
1.3 Thesis structure....................................2

Chapter 2 Theory of the device..........................3
2.1 Theory of Optical waveguide.........................3
2.2 Optical waveguide component.........................5
2.3 PDMS................................................6
2.3.1 Feature of PDMS...................................6
2.3.2 Fabricating condition of PDMS.....................7

Chapter 3 Fabrication of the asymmetric Bragg grating coupler filter..........................................9
3.1 Holography..........................................9
3.2 Fabrication of Bragg Grating.......................10
3.2.1 Theory of fabricating Bragg grating..............10
3.2.2 The structure of Bragg grating interference......11
3.3 Fabrication of polymer grating.....................13
3.3.1 Photolithography fabrication of Bragg grating....13
3.3.2 Stamp molding of Bragg grating filters...........17

Chapter 4 Measurement..................................25
4.1 The Measurement setup..............................25
4.2 Schematic of experiment set up for transmission spectrum measurement...................................26
Chapter 5 Discussion of Experiment result..............28
Chapter 6 Conclusions and future research..............31

References

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