Optical waveguides – Having nonlinear property
Reexamination Certificate
2006-01-17
2010-06-01
Healy, Brian M (Department: 2883)
Optical waveguides
Having nonlinear property
C385S001000, C385S003000, C385S037000, C385S024000, C398S079000, C398S087000, C398S091000, C398S092000
Reexamination Certificate
active
07729585
ABSTRACT:
A light source apparatus with modulation function has a wavelength conversion module (75) composed of a nonlinear optical material with a structure having a nonlinear constant modulated periodically. It outputs a difference frequency or sum frequency produced by multiplexing pumping light from semiconductor laser light sources (71) and (72) with different wavelengths through a WDM coupler (74) and by launching the multiplexed light into the optical waveguide. The semiconductor laser light source (72) includes a diffraction grating. The semiconductor laser light source (71) includes a section for modulating output light emitted from its semiconductor laser, and is connected to an external FBG (73) which has a reflection band narrower than a resonance wavelength spacing determined by the device length of the semiconductor laser. The FBG (73) is supplied with the modulated output.
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Asobe Masaki
Magari Katsuaki
Mawatari Hiroyasu
Miyazawa Hiroshi
Nishida Yoshiki
Healy Brian M
NipponTelegraph and Telephone Corporation
NTT Electronics Corporation
Workman Nydegger
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