H - Electricity – 01 – S
Patent
H - Electricity
01
S
345/12
H01S 3/00 (2006.01) G02B 6/12 (2006.01) H01S 3/23 (2006.01) H01S 5/50 (2006.01)
Patent
CA 1322039
ABSTRACT A laser amplifier in which the effective refractive index of the active region for the TE and TM modes is sufficiently different to provide multiple mode ripple beat frequency overlap within a 3dB gain envelope peak. The active region is made highly asymmetric with an aspect ratio of at least 10:1 and preferably 20:1 in order to provide the effective refractive index in the material refractive index may also be used. The confinement factor ratio is made as high as possible by providing different material refractive index in the orthogonal dimensions of the active region cross section.
592488
British Telecommunications Public Limited Company
G. Ronald Bell & Associates
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