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Title: | 應用耦合微環共振器於光延遲線之研究 Study on Optical Delay Line Using Coupled Microring Resonators |
Authors: | Tsun-Hsien Liu 劉尊賢 |
Advisor: | 薛文証 |
Keyword: | 微環共振器,光延遲線,延遲頻寬乘積,群速色散,形狀因子, microring resonator,optical delay line,delay-bandwidth product,group velocity dispersion,shape factor, |
Publication Year : | 2017 |
Degree: | 碩士 |
Abstract: | 本論文主要研究耦合微環共振器在光延遲線的應用,選擇不同型式之微環共振器,比較在延遲頻寬乘積以及波形品質上的差異,並分別以形狀因子以及群速色散來描述波形的品質。當耦合微環共振器為週期排列時,會得到較佳的延遲頻寬乘積,但因為穿透率響應在高週期數時會呈現瓶狀波形,因此形狀因子下降而群速色散升高,導致波形品質隨著週期數上升而下降。為解決上述問題,本論文使用準週期排列的耦合微環共振器,其排序方式依序為圖厄-莫爾斯、費波納契以及對稱費波納契,並在高階時發現波形品質可獲得顯著提升。上述準週期排列的耦合微環共振器在波形品質上分別具有以下特色:對稱費波納契具有最高的形狀因子以及群速色散,圖厄-莫爾斯同時具有高形狀因子以及低群速色散,費波納契不論在形狀因子還是在群速色散的表現都相對持平。 In this thesis, application of series-coupled microring resonators on optical delay line is studied. Delay-bandwidth product (DBP) and waveform quality of differently arranged series-coupled microring resonators are examined. The waveform quality is expressed by shape factor (SF) of transmission spectra and group velocity dispersion (GVD). In the case of periodical series-coupled microring resonators, values of DBP increase with increasing number of resonators. However, numerical calculation shows that transmission spectrum has bottle-shaped distribution for higher order and the waveform quality decreases with decreasing SF and increasing GVD. In order to solve the mentioned difficulty, the quasi-periodic series-coupled microring resonators according to Thue-Morse, Fibonacci and Symmetrical Fibonacci are introduced. Their optical characteristics including DBP, SF and GVD are discussed in detail. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/77950 |
DOI: | 10.6342/NTU201702155 |
Fulltext Rights: | 有償授權 |
metadata.dc.date.embargo-lift: | 2027-07-27 |
Appears in Collections: | 工程科學及海洋工程學系 |
Files in This Item:
File | Size | Format | |
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ntu-106-R04525089-1.pdf Restricted Access | 2.02 MB | Adobe PDF | View/Open |
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