WDM-PON用低成本OLT多波长光源研究

发布时间：2018-03-10 16:39

本文选题：波分复用无源光网络　切入点：光线路终端　出处：《武汉邮电科学研究院》2014年硕士论文　论文类型：学位论文

【摘要】：波分复用技术在扩展带宽、降低链路损耗和增加连接通道数等方面上具有很大的优势和潜力，，从而成为下一代宽带接入网技术的首选。然而，可调谐波长敏感WDM-PON系统组件的价格对于接入网来说过于昂贵，从而制约了波分复用无源光网络的发展；因此，开发低成本的多波长光源(波分复用无源光网络的重要组成部分)对降低中心局端光线路终端的价格从而促进波分复用无源光网络的进一步发展普及具有重要意义。本论文选取低成本的用于光线路终端的多波长光源作为研究课题，设计制作了一种基于增益芯片级联阵列波导光栅的低成本多波长光源，主要内容可归纳如下： (1)通过对多波长阵列波导光栅激光器的原理，成本等各方面的分析，详细介绍了其对比其他光源方案的优劣，这种光源可以通过AWG来精确控制输出波长，能够同时对各个波长进行控制与调制，而考虑到增益芯片低廉的价格和存储管理成本，可以有效降低整个光线路终端模块的成本。 (2)介绍了平面光波导技术的原理，数值分析方法以及制作工艺，对平面光波导器件阵列波导光栅进行了详细的介绍，完成用于本课题中多波长光源的AWG设计制作与测试，获得了较为理想的结果。其自由光谱范围大于50nm，插损低至2dB，通道3dB带宽为0.23nm，并且具有很小的外形尺寸。 (3)设计了基于混合封装技术的光源封装方案，对其机械稳定性，热性能进行了仿真分析，完成了光源的最终封装，对其工作特性进行了测试，AWG多波长光源的阈值电流为22mA，斜率效率0.19mW/mA，调制速率在1.25Gbps时消光比可以达到10dB。具有良好的工作特性，可以被用作为波分复用无源光网络光线路终端中的多波长光源。
[Abstract]:Wavelength Division Multiplexing (WDM) technology has great advantages and potential in extending bandwidth, reducing link loss and increasing the number of connection channels, thus becoming the first choice of next generation broadband access network technology. The price of tunable harmonic length sensitive WDM-PON system components is too expensive for access network, which restricts the development of wavelength division multiplexing passive optical network. The development of low cost multi-wavelength light source (an important component of WDM passive optical network) is of great significance to reduce the price of central local end optical line terminal and promote the further development and popularization of WDM passive optical network. In this paper, a low-cost multi-wavelength light source for optical line terminals is selected as a research topic. A low cost multi-wavelength light source based on gain chip cascade array waveguide grating is designed and fabricated. The main contents can be summarized as follows:. 1) by analyzing the principle and cost of multi-wavelength arrayed waveguide grating laser, the advantages and disadvantages of the light source are introduced in detail, which can accurately control the output wavelength through AWG. It can control and modulate all wavelengths at the same time, and considering the low cost of gain chip and storage management cost, it can effectively reduce the cost of the whole optical circuit terminal module. In this paper, the principle, numerical analysis method and fabrication technology of planar optical waveguide technology are introduced. The planar waveguide device arrayed waveguide grating is introduced in detail, and the AWG design and test of multi-wavelength light source are completed. The free spectrum range is more than 50 nm, the insertion loss is as low as 2 dB, the bandwidth of the channel is 0.23 nm and the size of the channel is very small. The scheme of light source packaging based on hybrid packaging technology is designed. The mechanical stability and thermal performance of the package are simulated and the final packaging of the light source is completed. The threshold current of AWG multi-wavelength light source is 22 Ma, slope efficiency is 0.19 MW / mAand the extinction ratio of modulation rate is up to 10 dB at 1.25 Gbps. It can be used as a multi-wavelength light source in wavelength division multiplexing (WDM) passive optical network optical line terminals.
【学位授予单位】：武汉邮电科学研究院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.1

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