Ultrahigh-frequency light source using dual-wavelength laser with 3-dB beam splitter and method of manufacturing the same
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United States of America Patent
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Feb 6, 2007
Grant Date -
Jun 16, 2005
app pub date -
Jul 1, 2004
filing date -
Dec 15, 2003
priority date (Note) -
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Abstract
A light source has a structure in which a 3-dB beam splitter is integrated with a Febry-Perot laser diode having a cleaved plane. A first waveguide grating and a first refractive index modifier changing a Bragg wavelength of the first waveguide grating are provided at one branch of the 3-dB beam splitter. A second waveguide grating and a second refractive index modifier changing a Bragg wavelength of the second waveguide grating are provided at another branch of the 3-dB beam splitter.
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