Distributed feedback devices with perturbations deviating...

Details Distributed feedback devices with perturbations deviating... Distributed feedback devices with perturbations deviating...

H - Electricity

01

S

345/12

H01S 3/02 (2006.01) H01S 3/063 (2006.01) H01S 5/12 (2006.01)

Patent

CA 1073088

DISTRIBUTED FEEDBACK DEVICES WITH PERTURBATIONS DEVIATING FROM UNIFORMITY FOR REMOVING MODE DEGENERACY Abstract of the Disclosure Distributed feedback devices such as distributed feedback lasers are modified by introduction of a central coupling strength discontinuity or other deviation from uniform nature of the distributed perturbations, in order to promote the transmission or oscillation of a single mode in preference over the nearest redundant modes. The class of deviations from uniform coupling strength may be mathematically termed antisymmetric deviations, because they are deviations about the midpoint of the perturbation pattern which result in a distinction of effect of the two halves of the pattern, taking either half as a reference pattern by itself. - 1 -

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