Coherent light generators – Particular resonant cavity – Distributed feedback
Patent
1996-02-29
1997-02-25
Healy, Brian
Coherent light generators
Particular resonant cavity
Distributed feedback
372 43, 372 45, 372 50, 372102, 359124, 359130, 437 51, 437129, 385 14, 385 37, H01S 308, H04J 1402, H01L 2120, G02B 612
Patent
active
056065736
ABSTRACT:
A method and apparatus for control of lasing wavelength in distributed feedback lasers using an improved waveguide. The waveguide comprises a periodic structure or grating and an active stripe which is oriented at a nonzero angle .THETA. with respect to a line perpendicular to the lines of the grating. Incremental changes in the operating wavelength of a plurality of lasers can be achieved by forming the active stripe of each waveguide of each laser at a different angle .THETA.. This method and apparatus provides a fine degree of control over the operating wavelength of distributed feedback lasers and is particularly useful in high capacity optical communications networks.
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Healy Brian
Lucent Technologies - Inc.
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