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    • 2. 发明专利
    • Waveguide type optical device
    • 波导型光学器件
    • JP2013232010A
    • 2013-11-14
    • JP2013156058
    • 2013-07-26
    • Ntt Electornics CorpNttエレクトロニクス株式会社Nippon Telegr & Teleph Corp 日本電信電話株式会社
    • OGAWA DAISUKESAIDA TAKASHIMORIYA TOMOYUKINAGASHIMA SHIGEOINOUE YASUYUKIKAMEI ARATA
    • G02B6/12
    • G02B6/12026G02B6/12011G02B6/12014G02B6/12023
    • PROBLEM TO BE SOLVED: To provide an array waveguide diffraction grating type optical multiplexer/demultiplexer which simultaneously invalidates temperature dependence and polarization dependence to be able to reduce an influence of PDL (polarization dependent loss).SOLUTION: An array waveguide diffraction grating type optical multiplexer/demultiplexer 109 includes an input channel waveguide 13, an input slab waveguide 14, an array waveguide 15, polarization dependence invalidating means 17, an output slab waveguide 18, temperature compensation means 27, and an output channel waveguide 21. The temperature compensation means 27 compensates for the temperature dependence of an optical path length in a channel waveguide of the array waveguide 15, and the polarization dependence invalidating means 17 invalidates the polarization dependence of an optical path length due to birefringence of the array waveguide 15 and the polarization dependence of an optical path length of the temperature compensation means 27. The polarization dependence invalidating means 17 is obliquely arranged or its position is shifted from the center of the array waveguide 15 by a prescribed value to simultaneously invalidate the temperature dependence and the polarization dependence.
    • 要解决的问题:提供一种阵列波导衍射光栅类型的光信号多路复用器/解复用器,其同时使温度依赖性和偏振相关性降低,以便能够减少PDL的影响(偏振相关损耗)。解决方案:阵列波导衍射光栅类型的光复用器 /解复用器109包括输入通道波导13,输入平板波导14,阵列波导15,偏振相关无效装置17,输出平板波导18,温度补偿装置27和输出通道波导21.温度补偿装置27 补偿阵列波导15的通道波导中的光路长度的温度依赖性,并且偏振相关无效装置17使由阵列波导15的双折射引起的光程长度的偏振度依赖性和 温度的光程长度com 偏振相关无效装置17倾斜布置或其位置从阵列波导15的中心偏移规定值,以使温度依赖性和极化依赖性同时失效。
    • 7. 发明专利
    • Planar lightwave circuit and method of manufacturing the same
    • 平面照明电路及其制造方法
    • JP2011133504A
    • 2011-07-07
    • JP2009289995
    • 2009-12-22
    • Ntt Electornics CorpNttエレクトロニクス株式会社
    • JINNAI HIROMITSUNAITO MASAHIKOMURASAWA ATSUSHI
    • G02B6/12G02B6/13
    • G02B6/12016G02B6/12023
    • PROBLEM TO BE SOLVED: To provide a planar lightwave circuit that reduces stress birefringence difference caused by the circuit, and eliminates polarization dependency of all interferometers simultaneously by over-etching. SOLUTION: The planar lightwave circuit includes at least two interferometers composed of a plurality of optical waveguides, and dummy patterns arranged on both sides of the optical waveguide of the interferometer having an optical waveguide density smaller than the maximum optical waveguide density, of the interferometers. The optical waveguide density of the interferometer A1 is larger than that of the interferometer A2. Therefore, the planar lightwave circuit 101 has dummy patterns 17 arranged on both sides of the optical waveguide 13 of the interferometer A1. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供减小由电路引起的应力双折射差的平面光波电路,并通过过蚀刻消除所有干涉仪的偏振相关性。 解决方案:平面光波电路包括由多个光波导组成的至少两个干涉仪,并且布置在干涉仪的光波导的两侧上的虚拟图案具有比最大光波导密度小的光波导密度 干涉仪。 干涉仪A1的光波导密度大于干涉仪A2的光波导密度。 因此,平面光波电路101具有布置在干涉仪A1的光波导13的两侧的虚拟图案17。 版权所有(C)2011,JPO&INPIT