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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/77000


    Title: 以漸變折射率高分子聚合物光波導設計4通道 × 25-Gbps單模光連接收發模組;Design of 4-Channel × 25-Gbps Single-Mode Optical Interconnect Module Based on Graded-Index Polymer Optical Waveguide
    Authors: 塗懋軒
    Tu, Mao-Xuan
    Contributors: 國立中央大學
    Keywords: 單模光學連接收發模組;高分子聚合物波導;蚊子法;漸變式折射率波導
    Date: 2018-08-03
    Issue Date: 2018-08-31 13:03:15 (UTC+8)
    Abstract: 摘要
    本論文介紹以蚊子法(mosquito method)製成之漸變式折射率高分子聚合物光波導設計4通道 × 25-Gbps單模光學連接收發模組之光學系統。本系統整合了雷射驅動晶片、轉組放大晶片、分散式回饋雷射與光檢測器於陶瓷基板,並覆晶封裝於印刷電路板,且以主動式對位法連接光學主動元件與高分子聚合物波導,再以PMT connector連接高分子聚合物波導與單模光纖。
    本高分子聚合物波導之設計,包含漸變折射率圓柱波導、對單模光纖耦合之波導橢球結構、主被動元件間距匹配彎曲波導結構、45度微反射面與圓拱形波導截面聚光結構等,藉此達到設計適用於遠距離傳輸之單模光學連接收發模組。
    此設計之光學模擬結果為:發射端之4通道平均光學插入損耗 3.30 dB,接收端之光學插入損耗 1.50 dB,由發射端到接收端之4通道平均總光學插入損耗 4.80 dB。光學主動元件在錯位損耗增加 1 dB情況下,在光軸上平均錯位容忍度為4微米(遠離波導),非光軸上平均錯位容忍度為±4.2微米,單模光纖光軸上錯位容忍度大於+20微米(遠離波導),非光軸上錯位容忍度為±2.1微米。由上述可知主動式封裝之精準度滿足此設計之要求。
    ;Abstract
    The design of the optical system for 4-channel × 25-Gbps single-mode optical interconnect module based on mosquito-method-made graded-index polymer optical waveguide is proposed. The diver IC, transimpedance amplifier (TIA), DFB lasers, and photodetectors were integrated on the ceramic substrate, which was flip-chip mounted on the printed circuit board. The DFB lasers/photodetectors, and polymer waveguide were connected by active alignment process. Furthermore, PMT connector was using to connect the polymer waveguide with the single-mode fiber (SMF).
    The graded-index circular single-mode waveguide (GI-CSMWG) design of single-mode optical interconnect module include the ellipsoid structure for WG-SMF coupling, the bending waveguide for separation-matching, and the 45° micro-reflector with cambered-surface focusing design of core. These designs of the single-mode optical interconnect module made longer transmission distance.
    The optical simulation result of optical insertion loss for transmitting part is -3.30 dB, for receiving part is -1.50 dB, and for whole optical interconnect module is -4.80 dB. The average 1-dB optical-axis-parallel alignment tolerances of DFB laser and photodetector are ±4 micron, and optical-axis-perpendicular part are ±4.2 micron. The 1-dB optical-axis-parallel alignment tolerance of SMF is more than +20 micron (to be remove from WG), and optical-axis-perpendicular part is ±2.1 micron. As a result, the design can meet the variability of the active alignment process.
    Appears in Collections:[光電科學研究所] 博碩士論文

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