Patent ID: 8730567

Claim:
A terahertz continuous wave generator comprising: an optical intensity modulator configured to modulate an optical signal into double sideband (DSB) optical signals; a local oscillator configured to generate a modulation signal for modulating the optical signal inputted to the optical intensity modulator into DSB optical signals; a notch filter configured to filter an optical signal with a specific frequency; an optical fiber amplifier configured to amplify an output signal of the optical intensity modulator, or generate an optical signal having a wider wavelength range than a notch width of the notch filter when an optical signal is not provided; an optical circulator configured to transmit the optical signal inputted to the optical fiber amplifier to the notch filter and transmit the optical signal reflected from the notch filter to an input of the optical intensity modulator; an optical coupler configured to apply the optical signal, which is reflected from the notch filter and transmitted through the optical circulator, to the optical intensity modulator; and an opto-electric converter (OE converter) configured to photomix the DSB signals outputted through the notch filter.