Optical waveguides – With optical coupler – Plural
Patent
1998-11-30
2000-08-22
Palmer, Phan T. H.
Optical waveguides
With optical coupler
Plural
385 16, 385 37, 385 27, 372 6, 359127, 359130, G02B 628
Patent
active
061084697
ABSTRACT:
A wavelength selective resonant grating exhibits transmission resonances when a single gap between two sections of a split gratings is used to provide a phase shift which is not a quarter wavelength in length or .pi./2 in phase. When the phase is changed to non - .pi./2 values (or the gap differs from a quarter wave), the transmission resonance moves from the center of the stop band. Appropriate adjustments of the phase over a .pi. interval allow tuning of the resonance across the entire stop band. The resonant optical wavelength grating can, illustratively, be used as wavelength filter, wavelength monitor, or as part of an Add/Drop arrangement.
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Caccuro John A.
Lucent Technologies Inc
Palmer Phan T. H.
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