Patent ID: 7068886

Claim:
A millimeter oscillator using a fiber Bragg grating, comprising: a light source for generating an optical signal having a predetermined line width; a fiber Bragg grating for receiving the optical signal generated from the light source to reflect optical signals of two wavelengths having a frequency difference corresponding to a desired millimeter wave; a directional coupler for receiving the optical signal reflected from the fiber Bragg grating to output the received optical signal to different output ports; a first type of laser for receiving the optical signal output from one output port of the directional coupler to output an optical signal with a wavelength of the input optical signal fixed; a second type of laser for receiving the optical signal output from the other output port of the directional coupler to output an optical signal with a wavelength of the input optical signal fixed; and a light detector for detecting the optical signals output from the first and second types of laser through the directional coupler.