光子学报, 2013, 42 (3): 298, 网络出版: 2013-03-05
特种非对称低损耗1×5光分路器
Special Asymmetric Low Loss 1×5 Optical Power Splitter
缓变展宽 1×5光分路器 非对称 光束传播法 Gradually broadening 1×5 optical power splitter Asymmetric Beam propagation method
摘要
设计和优化了一种新型低损耗、低偏振的基于二氧化硅的特种非对称1×5光分路器.在设计Y分支结构时, 输入端采用缓变展宽波导结构和直波导过渡波导相结合的结构, 此结构可以使输入光场缓慢展宽, 进行分束前的准备, 大大减小分支结构的辐射损耗和模式转换损耗.非对称1×5光分路器第一个端口输出功率占50%, 第二至五端口输出功率占50%.利用三维光束传播法模拟和优化了特种非对称1×5光分路器, 模拟结果表明, 该结构具有均匀性好、器件尺寸小、低损耗和低偏振等优点, 1×5光分路器在1 250~1 650 nm波长范围内, 第一个输出端口附加损耗小于0.07 dB, 均匀性小于0.023 dB, 偏振相关损耗小于0.009 dB, 第二到五端口附加损耗小于0.45 dB, 均匀性小于0.41 dB, 偏振相关损耗小于0.06 dB.
Abstract
A new style low loss and low polarization loss special asymmetric 1×5 optical power splitter is designed and optimized. The combination structure of gradually broadening waveguide and wide straight transition waveguide is introduced in the input waveguide during designing the Y-branch. The input optical field become gradually wide, the loss of Y-branch is obviously deceased. The power of first output port and second to fifth output port take 50% respectively. The three dimension beam propagation method is used to simulate and optimize the special asymmetric 1×5 optical power splitter, the simulation result indicate that the 1×5 splitter have the good uniformity, low insert loss, low polarization loss, and small dimension. Between the wavelength range 1 250~1 650 nm, the excess loss, the uniformity and polarization loss of first output port is less than 0.07 dB, 0.023 dB and 0.009 dB respectively. The uniformity and polarization loss of second to fifth output port is less than 0.45 dB, 0.41 dB and 0.06 dB respectively.
王亮亮, 安俊明, 吴远大, 王玥, 张家顺, 张晓光, 潘盼, 张俪耀, 胡雄伟, 赵德刚. 特种非对称低损耗1×5光分路器[J]. 光子学报, 2013, 42(3): 298. WANG Liang-liang, AN Jun-ming, WU Yuan-da, WANG Yue, ZHANG Jia-shun, ZHANG Xiao-guang, PAN Pan, ZHANG Li-yao, HU Xiong-wei, ZHAO De-gang. Special Asymmetric Low Loss 1×5 Optical Power Splitter[J]. ACTA PHOTONICA SINICA, 2013, 42(3): 298.