Coherent light generators – Particular resonant cavity – Distributed feedback
Reexamination Certificate
2006-09-12
2006-09-12
Harvey, Minsun Oh (Department: 2828)
Coherent light generators
Particular resonant cavity
Distributed feedback
C372S102000, C372S098000
Reexamination Certificate
active
07106778
ABSTRACT:
A tuneable laser having an active section, a phase section and a Bragg reflector comprising a plurality of discrete grating units, at least two of which gratings have a different pitch, wherein current is applicable to at least the grating having a longer pitch, such that the effective wavelength of the grating having a longer pitch can be tuned to the wavelength of the grating having a shorter pitch. A chirp grating can provide the difference in pitch.
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Yuichi Tohmori et al. Broad-Range Wavelenght-Tunable Superstructure Grating, IEEE Journal Of Quantum Electronics, vol. 29(6) (Jun. 1, 1993).
Carter Andrew Cannon
Reid Douglas Charles John
Bookham Technology plc
Harvey Minsun Oh
Lahive & Cockfield LLP
Laurentano, Esq. Anthony A.
Nguyen Phillip
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