Patent ID: 8031012

Claim:
An optoelectronic oscillator having an optoelectronic loop circuit, said optoelectronic loop circuit formed on a semiconductor substrate or a SiO2 substrate, said optoelectronic loop circuit comprising: a semiconductor laser; an optical waveguide guiding laser light emitted from said semiconductor laser, wherein said optical waveguide has a length on an order of centimeters; a photodetector detecting said laser light guided by said optical waveguide and outputting an electrical signal; an amplifier amplifying said electrical signal outputted from said photodetector and generating an amplified signal; and a refractive index compensation part, made of silicone resin, that compensates a change of a refractive index by a temperature of said optical waveguide, wherein said refractive index compensation part has a length shorter than the length of said optical waveguide and is formed in the middle of said optical waveguide, wherein said optoelectronic oscillator modulates said laser light emitted from said semiconductor laser by said amplified signal, and said optoelectronic oscillator generates microwave and optical pulses with a fundamental oscillation frequency determined by a delay time of said microwave and optical pulses at said optoelectronic loop circuit or a high harmonic component of integral multiples of said fundamental oscillation frequency.