Coherent light generators – Particular beam control device – Tuning
Reexamination Certificate
2009-07-20
2011-11-22
Park, Kinam (Department: 2828)
Coherent light generators
Particular beam control device
Tuning
C372S023000, C372S006000
Reexamination Certificate
active
08064490
ABSTRACT:
An optical resonator has a Y-branched waveguide including first, second, and third optical waveguides interconnected at a single point. The first optical waveguide leads toward a reflector. The second and third optical waveguides are optically interconnected by a curved extension of the second and third optical waveguides, or by an independent ring waveguide to which the second and third optical waveguides are directionally coupled. At least one wavelength selector such as a Mach-Zehnder interferometer is formed in one or both of the second and third optical waveguides. This optical resonator is small in size and can be tuned by means of a single parameter. A tunable laser can be formed by inserting an optical amplifier between the first optical waveguide and the reflector.
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Takahashi et al., “Tunable Lasers Based on Silica Waveguide Ring Resonators”,Optical Fiber Communication Conference Papers2008, OWJ1.
Oki Electric Industry Co. Ltd.
Park Kinam
Rabin & Berdo P.C.
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