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Tunable Terahertz Beat Signal Generation From an InAs/InP Quantum-Dot Mode-Locked Laser Combined With External-Cavity

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8 Author(s)
Zhejing Jiao ; Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, QC, Canada ; Jiaren Liu ; Zhenguo Lu ; Xiupu Zhang
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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.

Published in:

Photonics Technology Letters, IEEE  (Volume:24 ,  Issue: 6 )