可调谐DFB激光器及其控制电路

发布时间：2018-02-14 16:31

本文关键词： 光通信可调谐半导体激光器 REC阵列激光器机械控制成本低　出处：《南京大学》2015年硕士论文　论文类型：学位论文

【摘要】：可调谐半导体激光器是光纤通信系统和下一代光网络的关键器件之一。它不仅能为密集波分复用(DWDM)系统提供及时、有效的库存管理以及快速建立信道的功能,从而极大降低光源备用方案的成本,而且能为下一代可重构光网络提供自动波长配置、波长转换和波长路由功能,进而大大提高了网络的动态灵活性和带宽利用率。可调谐半导体激光器凭着其应用前景的广阔,获得了国内外普遍的关注。鉴于本实验室基于REC技术的半导体阵列激光器的研究和应用,本文利用REC技术大大降低阵列激光器芯片的制造成本的巨大优势,提出了一种基于REC阵列激光器芯片并采用微电机控制的高性能、低成本的可调谐激光器方案。本文首先回顾了光纤通信、可调谐半导体激光器的发展,发现高性能、低成本的可调谐激光器将会极大的推动可调激光器的在光通信领域的应用,进而促进光通信的发展。其次,本文简单介绍了基于REC技术的DFB激光器阵列,然后基于本实验室对阵列激光器的优势基础,设计了一种机械调谐的模块,通过将光纤固定在电机上,控制电机机械移动选择波长通道,进而实现波长调谐。我们完成了该可调谐DFB激光器模块的搭建,并且对整个模块进行了整体控制电路设计,配合模块方案,反复试验调试,最终实现了对8通道DFB激光器阵列的电机机械调谐,单个激光器的温度调谐以保证能够实现波长连续调谐以及电调谐。通过这种机械调谐的方式实现波长调谐的范围很大,只需设计所需波长的REC激光器阵列,就可以实现全C波段的调谐甚至更大,并且成本很低,具有很大的应用前景。
[Abstract]:Tunable semiconductor laser is one of the key devices in optical fiber communication system and next generation optical network. It can not only provide timely and effective inventory management for DWDM (dense wavelength Division Multiplexing) system, but also establish channel quickly. This greatly reduces the cost of alternative light source schemes and provides automatic wavelength configuration, wavelength conversion and wavelength routing functions for the next generation of reconfigurable optical networks. Thus, the dynamic flexibility and bandwidth utilization of the network are greatly improved. In view of the research and application of semiconductor array lasers based on REC technology in our laboratory, this paper makes use of REC technology to greatly reduce the manufacturing cost of array laser chips. A high performance, low cost tunable laser scheme based on REC array laser chip and controlled by micromotor is proposed. The development of optical fiber communication and tunable semiconductor laser is reviewed in this paper. Low-cost tunable lasers will greatly promote the application of tunable lasers in the field of optical communication, and then promote the development of optical communication. Secondly, this paper briefly introduces the DFB laser array based on REC technology. Then, based on the advantage of the lab to the array laser, a mechanical tuning module is designed, which can control the mechanical movement of the motor to select the wavelength channel by fixing the optical fiber on the motor. Then the wavelength tuning is realized. We have completed the building of the tunable DFB laser module, and designed the whole module control circuit, cooperated with the module scheme, repeatedly tested and debugged, Finally, the motor mechanical tuning of 8-channel DFB laser array and the temperature tuning of a single laser are realized to ensure the continuous and electric tuning of the wavelength, and the range of wavelength tuning by this mechanical tuning method is very large. By designing the REC laser array with the required wavelength, the tuning of the whole C-band can be realized even greater, and the cost is very low, so it has a great application prospect.
【学位授予单位】：南京大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN248

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