Coherent light generators – Particular active media – Semiconductor
Reexamination Certificate
2006-09-27
2010-10-12
Harvey, Minsun (Department: 2828)
Coherent light generators
Particular active media
Semiconductor
C372S099000, C372S102000
Reexamination Certificate
active
07813398
ABSTRACT:
The present invention provides a semiconductor optical element applicable to an EC-LD or an SLD, and an external cavity laser having the semiconductor optical element. The semiconductor optical element has a pair of cleavage surfaces, and comprises a semiconductor substrate11having a base surface and a planer structure provided on the base surface and provided with a waveguide1G having an active layer. The waveguide1G has an end surface with low reflectivity and another end surface with certain reflectivity. The waveguide1G includes an end portion having a first optical axis in the vicinity of the first end surface1TLand an end portion having a second optical axis in the vicinity of the second end surface1TH, the first optical axis being inclined at a first angle ΦLother than zero degree with respect to a normal to the first end surface1TL, the second optical axis being inclined at a second angle ΦHother than zero degree with respect to a normal to the second end surface1TH, the first angle ΦLbeing different from the second angle ΦH. The end portion of the waveguide1G is different in width from the other end portion of the waveguide1G.
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Mori Hiroshi
Samejima Takahiro
Yamada Atsushi
Anritsu Corporation
Greer Burns & Crain Ltd.
Harvey Minsun
Niu Xnning
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