邊射型漸耦合式於1.55μm波長之半導體光放大器與光檢測器單晶片整合

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姓名

蔡緒孝(Shu-Hsiao Tsai) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

邊射型漸耦合式於1.55μm波長之半導體光放大器與光檢測器單晶片整合
(Monolithically Integration of Edge Emission Evanescently Coupled Semiconductor Optical Amplifier and Photodetector at 1.55μm Wavelength)

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摘要(中)

本論文針對1.55μm波長邊射型漸耦合式半導體光放大器與光檢測器單晶片整合之製作與研究，利用半導體光放大器體積小、積體化佳之特性，在光通訊系統接收端模組中與光檢測器做單晶片整合，入射光訊號經由漸耦合式波導將光功率漸進的導入半導體光放大器，讓光訊號直接做光對光的放大，再經由光性設計與模擬過的光耦合層，將放大後的光信號逐漸耦合至吸收層吸收。在相同製程下可提供半導體光放大器與光檢測器之整合元件與獨立元件。
利用與光檢測器整合之優勢，提出一簡易量測光放大增益之方法，省去一般雙邊耦合量測上光對準之不易與高的光功率損耗，或是其他量測方法需要鍍抗反射膜和開測量窗口等額外製程。我們直接利用整何元件積體化後之優勢，檢視光檢測器之光電流變化量，即可計算出半導體光放大器之增益。本論文為求量產之考量，在製程與量測上皆以降低成本作為考量目標。
我們提供最大光放大增益8.8dB之半導體光放大器，採用伸張應變之多重量子井，可使得半導體光放大器對TE極化以及TM極化之增益差距只有極小之0.12dB，達到對極化非敏感的要求。而在光檢測器的表現上，不論是整合元件或是單一光檢測器在頻寬的表現上皆能超過40 GHz，符合SONET/SDH OC-768的規格。且皆不受偏壓及輸入光功率不同而影響頻寬之表現，達到電荷補償式單載子傳輸光檢測器之設計目標。

摘要(英)

This thesis studied the monolithically integration of edge emission evanescently coupled semiconductor optical amplifier and photodetector at 1.55μm wavelength. Due to the smaller size and better integration with other optic electrical device of SOA, it can be integrated in receiver module of optical fiber communication system. Input optical signal passed through the fiber guide and MQW, it can be amplified by stimulation emission of SOA. After signal amplified we design the coupling layer to couple the signal to the absorption layer of photo detector. We can provide the integrated device and the individual device in the same fabrication process.
We can take advantage of the integrated device to provide a simple gain measurement of SOA. It can reduce the optical loss and fiber alignment of conventional measurement or additional process of other ASE gain measurement. We can monitor the difference of photocurrent with different injection current of SOA. This thesis provided the low cost fabrication and measurement system.
We provide the maximum optical gain 8.8dB and the difference of TE mode and TM mode only 0.12dB. It can achieve the polarization insensitive. The performance of detector bandwidth all can achieve the 40GHz and conform to SONET/SDH OC-768.

關鍵字(中)

★ 光檢測器
★ 半導體光放大器
★ 單晶片整合

關鍵字(英)

★ photodetector
★ semicondoctor optical amplifier
★ monolithically integration

論文目次

第一章前言 1
1-1光纖通訊之發展趨勢 1
1-2 光檢測器發展與應用 4
1-3 光放大器發展與應用 6
1-4 研究動機與方向 8
1-5 論文架構 9
第二章元件理論與設計原理 10
2-1半導體光放大器設計原理 10
2-1-1半導體光放大器工作原理 10
2-1-2增益與頻寬 12
2-1-3飽和增益 15
2-1-4雜訊 16
2-2耦合式光檢測器設計原理 18
2-2-1傳統P-I-N光檢測器工作原理 18
2-2-2單載子傳輸光檢測器工作原理 19
2-2-3電荷補償式單載子光檢測器工作原理 22
2-2-4光檢測器之幾何結構 24
第三章元件模擬與製作 27
3-1 IN1-XGAXASYP1-Y/IN1-XGAXASYP1-Y多重量子井設計 27
3-2元件幾何結構設計 36
3-3元件光性模擬 37
3-4元件製作 42
3-4-1製程步驟 42
3-4-2製作考量 48
第四章元件量測與分析 50
4-1量測系統架構 50
4-1-1 SOA增益量測簡介 50
4-1-2 光檢測器頻寬量測簡介 53
4-2量測結果 56
4-2-1光放大器與光檢測器整合之量測結果 56
4-2-2光檢測器量測結果 60
4-3量測結果分析與比較 62
第五章結論 64
參考文獻 66

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指導教授

詹益仁(Yi-Jen Chan)

審核日期

2006-6-26

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