Title :
Optical generation of millimeter and submillimeter-waves through optical side-band injection locking of semiconductor lasers
Author :
Bhattacharya, Madhumita ; Sarkar, Bipul ; Chattopadhyay, Taraprasad
Author_Institution :
Dept. of Phys., Visva-Bharati Univ., West Bengal, India
Abstract :
In this letter, we propose a novel scheme for realizing a tunable source of millimeter (mm)- and submillimeter (submm)-waves by mixing two coherent lightwaves in a wide-band photodiode. The coherent lightwaves are generated from two laser diodes injection locked to two optical side-bands generated from a overdriven phase modulator. Calculated submm-wave power at a frequency of 200 GHz generated by this method is 1.2 mW for each laser diode output power of 20 mW. The proposed method possesses a unique advantage of phase noise reduction of the generated mm-wave.
Keywords :
electro-optical modulation; laser mode locking; laser tuning; microwave photonics; millimetre wave generation; optical communication equipment; semiconductor lasers; submillimetre wave generation; 1.2 mW; 20 mW; 200 GHz; coherent lightwaves; generated mm-wave; laser diode output power; millimeter-wave generation; optical generation; optical side-band injection locking; optical side-bands; overdriven phase modulator; phase noise reduction; semiconductor lasers; submillimeter-wave generation; submm-wave power; tunable source; wide-band photodiode; Diode lasers; Frequency; Optical mixing; Optical modulation; Optical noise; Phase modulation; Photodiodes; Power generation; Tunable circuits and devices; Wideband;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.803908
