Single mode channel optical waveguide with a stress-induced birefringence control region

作者: Mitsuho Yasu , Kaname Jinguji , Norio Takato , Masao Kawachi , Katsunari Okamoto

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摘要: In a single mode optical waveguide having substrate, cladding layer formed on the core portion embedded in layer, and an elongated member for applying stress to or relief groove relieving from along portion. The position, shape material of are determined such way that stress-induced birefringence produced accordance with difference thermal expansion coefficient between substrate is desired value.

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