Research And Design Of Tunable Optical Receiver Based On One-Mirror-Inclined Three-Mirror-Cavity Photodetector

The research work included in this thesis was supported by grants from one of the sub-projects of National Basic Research Program of China (National "973" Program: No. 2003CB314900) and the High Technology Research and Development Program of China(National "863" Project: No.2006AA03Z416&No.2007AA03Z418).Recently, with the development of optical fiber communications, wavelength division multiplexing (WDM) has been developed rapidly in the long-haul backbone network, metropolitan area network and access network, and the all-optical network based on WDM is just under intensively research. Wavelength-selective receiving has become the key technology of WDM and all-optical network applications. The structure of current demultiplexing receiver is based on the combination of demultiplexer and photodetector and its performance is not quite well. If such structures can be improved, the performance of communication systems and networks will be upgraded. The integrated demultiplexing receiver with wavelength-tunable, wavelength-selective, high-speed and high quantum-efficiency can download the wavelength we needed agilely. This receiver can hopefully overcome the drawbacks of the "Demultiplexer/Filter + Photodetector" structure, such as high cost, over-size, additional insertion loss and etc.Professor Ren Xiaomin proposed a novel structure (One-Mirror- Inclined Three-Mirror-Cavity, OMITMC), which integrated filtering, detecting and wavelength-tuning into one receiving device. Optical receiver using photodetector with this structure has potential advantages in simplifying network design, increasing network device integration, reducing network constructing cost and etc.This thesis did systematic theoretical and experimental research work in the principle, design and manufacture of optical receiver based on WDM integrated demultiplexing device. The main work is listed as follows:1. Summarized the development of WDM system, conventional demultiplexing techs for WDM systems, novel demultiplexing photodectors and high-speed optical receiver used in optical fiber communications.2. According to classical high-speed circuit design theory, discussed and analyzed signal integrity of high-speed digital circuit, which is the theoretical basis of the optical receiver circuit design.3. Introduced the measuring of the photodetector's spectral response, proposed a precise measuring method of photodetector's absolute quantum efficiency. The method is implemented on OMITMC photodetector. The absolute quantum efficiency can be obtained with common measuring devices and without the need of complex beam process system.4. According to the optical receiver's principle and structure and the characteristic of the OMITMC photodetector, scheme and chips was selected, high speed optical receiver was manufactured. The module's maximum operating rate is 2.5Gbit/s. Then we measured the receiver module, the result demonstrated that it's performance is good.