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1. 发明授权

US06522822B2 Strongly confined polarization-independent single-mode optical ridge waveguide 失效
标题翻译：强烈的偏振无关单模光脊波导
公开(公告)号：US06522822B2
公开(公告)日：2003-02-18
申请号：US09789447
申请日：2001-02-20
申请人： Wei-Ping Huang , Chenglin Xu , Mee Koy Chin , Yi Liang , Xun Li
发明人： Wei-Ping Huang , Chenglin Xu , Mee Koy Chin , Yi Liang , Xun Li
IPC分类号： G02B610
CPC分类号： G02B6/125 , G02B2006/12078 , G02B2006/12097 , G02B2006/12119 , G02B2006/12176
摘要： A strongly confined ridge waveguide that provides substantially reduced polarization sensitivity, without significant compromise for other waveguide characteristics such as, for example, single-mode condition, and low propagation and bending losses for the fundamental mode. The present invention considers waveguide material composition and thickness for guiding and cladding layers, bend radius, ridge width and etch depth at which the modal indices of the fundamental TE and TM modes are equal. With those parameters, the losses (e.g., the imaginary parts of the modal indices) of the fundamental and first-order modes may be calculated. By considering the previously mentioned criteria, a low-loss, single-mode ridge waveguide may be constructed in accordance with the present invention having losses of the fundamental modes in the range of less than approximately 1.0 dB/mm, and losses of higher-order modes in the range of greater than approximately 10 dB/mm (thus providing a loss difference of at least approximately 10 dB/mm).
摘要翻译：强限制的脊形波导，其提供显着降低的偏振灵敏度，而不对其他波导特性（例如单模状态）以及对于基模的低传播和弯曲损耗的显着损害。本发明考虑了用于引导和覆盖层的波导材料组成和厚度，基本TE和TM模式的模态指数相等的弯曲半径，脊宽度和蚀刻深度。利用这些参数，可以计算基本和一阶模式的损耗（例如，模态指数的虚部）。通过考虑上述标准，可以根据本发明构造低损耗单模脊波导，其具有在小于约1.0dB / mm的范围内的基模的损耗，并且高阶损耗在大于10dB / mm的范围内（因此提供至少约10dB / mm的损耗差）的模式。

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