Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2005-09-27
2005-09-27
Patel, Vip (Department: 2879)
Optical waveguides
With optical coupler
Input/output coupler
C385S129000
Reexamination Certificate
active
06950577
ABSTRACT:
A waveguide Bragg grating (WBG) is apodized by varying the duty cycle of selected grating periods while fixing the pitch of the grating periods. In one embodiment, the WBG is implemented in a silicon substrate using polysilicon filled trenches of varying width while keeping the grating periods' pitch constant. The polysilicon trenches are formed so that if the width of one trench is increased compared to an adjacent grating period, the trench width in the other adjacent grating period (if present) is decreased.
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Liu Ansheng
Morse Michael T.
Ovadia Shlomo
Samara-Rubio Dean A.
Blakely , Sokoloff, Taylor & Zafman LLP
Dong Dalei
Patel Vip
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