未來光通訊系統所需之新穎光電元件與技術之研究---總計畫

Abstract

本群體研究計畫將針對未來光通訊系統可能會需要的幾種新穎光電元件 與光電技術來進行整合性之研究，主要的研究方向包括：新穎光電半導體元件 （基於量子點VCSEL 之長波長單模雷射、慢光元件、單光子光源等）、新穎光 纖元件（結合光纖與微光環結構之新型積體化元件等）、新穎光纖傳輸與網路 技術（新型DPSK 光信號傳輸及處理技術等）、新穎微波-光纖傳輸與網路技術 （雙向超寬頻無線光纖分波多工擷取網路及微波光電元件等）、新穎光固子光 纖雷射技術與其在量子通訊等方面之應用（高重複率低噪音高功率超短脈衝鎖 模光纖光固子雷射光源、量子糾結態光之產生、傳送、量測與應用、量子密碼 傳輸、光固子慢光之量子效應等）。這些研究方向涵蓋了從元件與模組到傳輸 與系統的各個重要層次的一些熱門研究領域，並兼具了學術研究上的新穎性與 未來應用上的重要性。主要的研究團隊成員已有多年的研究合作經驗（連續兩 期各３年的國科會群體研究計畫），預期未來３年應可持續在光通訊相關的研 究上有很好的研究成果貢獻。本計畫為此群體研究計畫之總計畫，我們一方面 將透過總計畫的居間協調來加強各子計畫間的整合性，一方面也將結合各子計 畫的成果來進行整合性的研究及展示，包括新發展元件與模組的實際傳輸測試 以及不同傳輸技術的混合傳輸測試等。將採用的方法包括建立一個短距離傳輸 平台利用波長多工方式來同時傳輸資料、無線通訊訊號、及量子保密通訊頻 道，一方面用來測試相關發展元件、模組、與傳輸技術的可行性，一方面也得 以研究不同種類頻道間的干擾問題；或是利用我們已有的光纖循環迴路傳輸平 台來整合測試所發展的光電半導體元件、光纖元件、光纖雷射、光信號處理元 件等，以使不同子計畫間的元件／模組與傳輸／系統的不同層次研究能有更好 的互動式發展。

The present integrated project will perform integrated investigation on the following important development trends for future optical communication systems: novel semiconductor photonic devices (quantum dot VCSEL based long-wavelength single-mode lasers, slow light devices, single photon emitters), novel fiber-optic devices (fiber integrated micro-ring devices), novel optical transmission and networking techniques (DPSK transmission and processing), novel Radio-over-Fiber techniques (bidirectional ultra-wideband Radio-over-Fiber WDM access networks and RF photonics), novel modelocked fiber lasers for quantum communication applications (high repetition rate, low noise, high power modelocked fiber soliton lasers, generation, distribution, detection, and applications of quantum entangled states, quantum key distribution, quantum effects of slow lights, etc). These research directions cover all the layers of devices, modules, transmission, systems, and concentrate on some of the present hot research topics. Both the academic novelty and the application importance has also been considered and emphasized. The main research team has already have long-term research cooperation experience (two continuing 3-year NSC integrated projects). We expect to continue to generate the excellent research outcomes for the following three years. This project is the main project for the integrated project. We will enforce the cooperation between different sub-projects through the coordination of the main project and perform some integrated researches and demos. One way is to build a short-reach transmission link to simultaneously transmit WDM data, radio, and quantum key distribution channels so that the developed devices, modules, and transmission techniques can be tested and the possible interference among different channels can be studied. Another way is to utilize the established fiber circulating loop to test the developed semiconductor devices, fiber devices, fiber lasers, and photonic signal processing devices so that the interaction between the device/module layer and the transmission/system layer among different sub-projects can be enhanced.