Integrated closed-loop cavity of a tunable laser

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • M. Ren
  • H. Cai
  • Y. D. Gu
  • K. Radhakrishnan
  • W. Ser
  • H. D. Sun
  • Q. X. Liang
  • D. L. Kwong
  • A. Q. Liu

Detail(s)

Original languageEnglish
Article number151105
Journal / PublicationApplied Physics Letters
Volume109
Issue number15
Publication statusPublished - 10 Oct 2016
Externally publishedYes

Abstract

In this paper, a closed-loop cavity of a tunable laser integrated onto a silicon chip is demonstrated. The closed-loop cavity consists of a semiconductor optical amplifier chip, two separated micro-ring resonators, and a U-shaped waveguide sub-loop, enabling dominating lasing in the counterclockwise direction. The lasing wavelength is tuned by varying the effective refractive index of the thermal ring-resonators. It has achieved wide tuning range (55.4 nm), high spectral purity (50-dB side mode suppression ratio), ∼1-mW output power, and 36-dB counter-propagation power suppression ratio. The integrated tunable laser has high potential in applications such as optical network, optical sensing, and integrated optoelectronic systems.

Bibliographic Note

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Citation Format(s)

Integrated closed-loop cavity of a tunable laser. / Ren, M.; Cai, H.; Gu, Y. D.; Chin, L. K.; Radhakrishnan, K.; Ser, W.; Sun, H. D.; Liang, Q. X.; Kwong, D. L.; Liu, A. Q.

In: Applied Physics Letters, Vol. 109, No. 15, 151105, 10.10.2016.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review