- 专利标题: Integrated optical device and method for manufacturing thereof
-
申请号: US421400申请日: 1989-10-13
-
公开(公告)号: US4978188A公开(公告)日: 1990-12-18
- 发明人: Masao Kawachi , Norio Takato , Kaname Jinguji , Akio Sugita , Shin Sumida
- 申请人: Masao Kawachi , Norio Takato , Kaname Jinguji , Akio Sugita , Shin Sumida
- 申请人地址: JPX Tokyo
- 专利权人: Nippon Telegraph and Telephone Corporation
- 当前专利权人: Nippon Telegraph and Telephone Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX162164 19870629; JPX116938 19880516
- 主分类号: G02B6/122
- IPC分类号: G02B6/122 ; G02B6/10 ; G02B6/12 ; G02B6/126 ; G02B6/13 ; G02B6/14 ; G02B6/34 ; G02F1/01
摘要:
An integrated optical device includes a substrate; a single-mode optical waveguide having a cladding layer disposed on the substrate and a core portion embedded in the cladding layer for transmitting light therethrough; and a stress applying film disposed on a desired portion of the cladding layer for adjusting stress-induced birefringence of the single-mode optical waveguide by irreversibly changing the stress exerted on the core portion by a trimming technique. The integrated optical device can be manufactured by the steps of forming a cladding layer on a substrate; forming a single-mode optical waveguide having a core portion embedded in the cladding layer for transmitting light therethrough; and forming, on the cladding layer, a stress applying film for exerting a stress on the single-mode optical waveguide to irreversibly change the stress by trimming the film. The device exhibits a precisely adjusted birefringence and a desired polarization dependence or independence, and is effective for constructing an integrated optical device for optical communication, for optical sensing or for optical signal processing, in which the polarization characteristics play an important role.
公开/授权文献
- US4435466A Multi-layered sealing sheet of elastomeric synthetic resin 公开/授权日:1984-03-06