Optical semiconductor device and method of controlling the same

Details Optical semiconductor device and method of controlling the same Optical semiconductor device and method of controlling the same

2011-08-30

2011-08-30

Doan, Jennifer (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

C385S015000, C385S031000

Reexamination Certificate

active

08009947

ABSTRACT:
An optical semiconductor device includes a waveguide having one or more first segments having a region that includes a diffractive grating and another region combined to the region, one or more second segments having a region that includes a diffractive grating and another region combined to the region and a plurality of third segments having a region the includes a diffractive grating and another region combined to the region, a length of the second segment being different from that of the first segment, a length of the third segment being shown as L3=L1+(L2−L1)×K1in which 0.3≦K1≦0.7, L1is a length of the first segment, L2is a length of the second segment and L3is a length of the third segment; and a refractive index control portion controlling refractive index of the first segment through the third segments.

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patent: 0647867 (1995-04-01), None
patent: 1753104 (2007-02-01), None
Alibert, G. et al “Subnanosecond Tunable Laser Using a Single Electroabsorption Tuning Super Structure Grating,” IEEE Photonics Technology Letters, IEEE Service Center, Jul. 1, 1997, vol. 9 No. 7, pp. 895-897.
European Search Report dated Sep. 15, 2008, issued in corresponding European Application No. 08154093.2.

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