Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2006-01-03
2006-01-03
Ullah, Akm Enayet (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
C385S129000
Reexamination Certificate
active
06983091
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.
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Grunnet-Jepsen Anders
Johnson Alan E.
Sweetser John N.
Blakely , Sokoloff, Taylor & Zafman LLP
Ullah Akm Enayet
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