Title :
Tunable Terahertz Beat Signal Generation From an InAs/InP Quantum-Dot Mode-Locked Laser Combined With External-Cavity
Author :
Jiao, Zhejing ; Liu, Jiaren ; Lu, Zhenguo ; Zhang, Xiupu ; Poole, Philip J. ; Barrios, Pedro J. ; Poitras, Daniel ; Caballero, Juan
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, QC, Canada
fDate :
3/15/2012 12:00:00 AM
Abstract :
Tunable terahertz beat signal generation is demonstrated by using a C-band InAs/InP quantum-dot (QD) mode-locked laser combined with external cavity of two fiber Bragg gratings (FBGs), where one of the FBGs is tunable in wavelength. Beat signals with ultra-high repetition rates quasi-continuously from 1 to 2.21 THz are observed between the two modes, which are phase-correlated due to intracavity four-wave mixing effect in the QD waveguide.
Keywords :
Bragg gratings; III-V semiconductors; indium compounds; laser mode locking; multiwave mixing; optical tuning; quantum dot lasers; InAs-InP; QD waveguide; beat signals; fiber Bragg gratings; frequency 1 THz to 2.21 THz; intracavity four-wave mixing effect; quantum-dot mode-locked laser; tunable terahertz beat signal generation; ultra-high repetition rates; Cavity resonators; Fiber gratings; Laser mode locking; Optical pulses; Optical reflection; Quantum dot lasers; Fiber Bragg gratings (FBGs); quantum-dot mode-locked lasers (QD MLLs); terahertz beat signal;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2182642
