隨著行動通訊、隨選視訊、手機上網及數位家庭等資訊內容的普及,顯而易見的所需的頻寬越來越不足。面對這種挑戰,最具希望的系統方法乃是建構出一套混合式的傳輸系統。 在本篇論文中,使用單一顆可產生多波長且具有低成本效益的單一縱模分佈回授布雷格雷射(Distributed Feedback Bragg, DFB),取代多顆不同波長的雷射光源,應用於混合式光纖微波傳輸系統。利用此雷射光源的特性,本篇論文提出了兩個實驗架構,除了驗證此一光源的實用性之外,並且提出一套混合有線及無線訊號的光纖微波傳輸系統架構。 首先,我們先優化多波長光源,再將基頻訊號同時載入多波長光源中,進而升頻成無線訊號,成功的將各個無線訊號傳遞到不同的光纖接收端。在第二個實驗架構中,提出了一套整合有線及無線訊號的混合式三頻傳輸系統,本系統除了能降低系統的建構成本之外,亦可簡化整體光纖傳輸系統的複雜性。
With the ubiquitous popularity of handheld devices, the demands on wireless and wired-line capacity have grown rapidly. The next generation communication systems require large data rate and broadband services highly. radio-over-fiber (ROF), fiber-to-the-X (FTTX), and fiber optical CATV systems are promising candidates to meet the demands in wireless and wire-lined optical access networks. In this research, we present a novel multi-wavelength laser light source by a single distributed feedback (DFB) lasers to replace multiple dedicate wavelength lasers in hybrid Radio-over-fiber transport systems. Taking the advantage of this device, we proposed two experiments. Moreover, to verify the practicality of a light source and also proposed a hybrid multi-band transport system. Firstly, we optimized the multiple optical carriers and then up-convert a baseband signal into a RF range in optical domain which is successfully transmission different RF signal in optical receiver. In the second experiment, we developed a hybrid three-band transport system that is integration of wired and wireless signal. However, the system not only can reduce the construction cost of the system but also be employed to simplify the network optical fiber transmission system.