Widely Tunable Single/Dual RF Signal Generation by a Monolithic Three-Section DFB Laser

Chung Ping Huang, Yu Ming Huang, Hsiang Yun Shih, Fu Chun Hsiao, Chun Hong Chen, Shun Chieh Hsu, Chien Chung Lin*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

A three-section distributed feedback laser with a 2.5 InP/air pair of distributed Bragg reflectors (DBRs) was fabricated and analyzed in terms of its microwave generation capability. A widely tunable single radio frequency (RF) signal can be detected using optical heterodyning, and the tuning range is from 2 to 45 GHz. The incorporation of the third section provides an opportunity to present the dual RF operation when three emission peaks are near to each other in the wavelength domain. The proposed design provides a 21.3% enhancement in the RF tuning range compared with the range of a two-section laser (35.29 GHz versus 42.81 GHz). The compactness of the proposed device can be useful for future radio-over-fiber applications.

Original languageEnglish
Article number84
Number of pages8
JournalNanoscale Research Letters
Volume15
Issue number1
DOIs
StatePublished - 17 Apr 2020

Keywords

  • DFB lasers
  • FWM
  • Microwave generation
  • Monolithic integration

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