Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2006-10-17
2006-10-17
Sanghavi, Hemang (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
C250S227180
Reexamination Certificate
active
07123795
ABSTRACT:
A method for aligning the spectral responses of two comb-like optical filters is provided. This method does not necessitate the use of spectrally-resolved equipment, as it uses the optical power correlation profile of a broadband light signal representative of the combined spectral responses of the two filters. In one embodiment, the power correlation profile is compared to a pre-stored profile. A tuning method for tuning two filters using this alignment method is also provided. The two filters are first relaxed to an unstretched position, and the second filter is stretched and aligned with the first. The first filter is also stretched and aligned with the other. Both filters are then stretched at a calibrated value.
REFERENCES:
patent: 5774619 (1998-06-01), Bruesselbach
patent: 6396855 (2002-05-01), Tam et al.
patent: 6498891 (2002-12-01), Montesanto et al.
patent: 6937793 (2005-08-01), Lelievre et al.
patent: 2005/0002609 (2005-01-01), Bylander
Lachance Richard L.
Mailloux Alain
Savard Simon
Darby & Darby
Sanghavi Hemang
Teraxion Inc.
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