Generation of Low-phase Noise and Frequency-tunable Millimeter-/terahertz-waves Using Optical Heterodyning Techniques with Uni-traveling Carrier Photodiodes

This paper describes recent advances in the generation of millimeter- and terahertz-waves based on optical heterodyning techniques. Low-phase noise, wide frequency tunability, and high output power are most important issues in many applications. Basic component technologies such as an optical sideband generator, photonic light-wave circuits for signal processing, and antenna-integrated photodiode modules, and their applications to high-performance measurement and communications are presented