Invention Application
- Patent Title: Method for writing a planar waveguide having gratings of different center wavelengths
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Application No.: US10911061Application Date: 2004-08-03
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Publication No.: US20050008977A1Publication Date: 2005-01-13
- Inventor: Anders Grunnet-Jepsen , Alan Johnson , John Sweetser
- Applicant: Anders Grunnet-Jepsen , Alan Johnson , John Sweetser
- Main IPC: G02B6/13
- IPC: G02B6/13 ; G02B5/18 ; G02B6/12 ; G02B6/122 ; G02B6/124 ; G02B6/125 ; G02B6/132 ; G02B6/134 ; G02B6/136 ; G02B6/34 ; G03C5/00

Abstract:
Multiple Bragg gratings are fabricated in a single planar lightwave circuit platform. The gratings have nominally identical grating spacing but different center wavelengths, which are produced using controlled photolithographic processes and/or controlled doping to control the effective refractive index of the gratings. The gratings may be spaced closer together than the height of the UV light pattern used to write the gratings.
Public/Granted literature
- US3090559A Thermostatic mixing valve Public/Granted day:1963-05-21
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