Photonic Terahertz Carrier Generation Using an Optical Feedback Mode-Lock Laser Diode

A tunable narrow-linewidth photonic terahertz (THz) carrier generation scheme using a distributed-Bragg-reflector-based mode-locked laser diode (MLLD) with optical feedback and mode filtering technique is proposed and experimentally demonstrated. Photonic terahertz carrier covering the D-band (110-1...

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Bibliographic Details
Published inIEEE photonics journal Vol. 13; no. 3; pp. 1 - 6
Main Authors Wang, Huan, Lu, Dan, Zhang, Ruikang, Zhao, Lingjuan
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.06.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Communications systems
Feedback loops
Heterodyning
Laser mode locking
Mode-locked laser diode
Optical amplifiers
Optical attenuators
Optical feedback
Optical fibers
Optical filters
Optical mixing
Optical polarization
Photonics
Semiconductor lasers
THz wave
Tunable lasers
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Summary:A tunable narrow-linewidth photonic terahertz (THz) carrier generation scheme using a distributed-Bragg-reflector-based mode-locked laser diode (MLLD) with optical feedback and mode filtering technique is proposed and experimentally demonstrated. Photonic terahertz carrier covering the D-band (110-170 GHz), and H-band (220-325 GHz) was obtained. With the assistance of the feedback loop, the optical linewidth of the MLLD was reduced from MHz to kHz level, and the heterodyning photonics carrier linewidth was reduced from 121.7 kHz to 2.1 kHz, satisfying the linewidth tolerance in the THz communication system with high-order modulation formats.
ISSN:1943-0655
1943-0655
1943-0647
DOI:10.1109/JPHOT.2021.3074945