Narrow-spectral-linewidth silicon photonic wavelength-tunable laser with highly asymmetric Mach-Zehnder interferometer

Rui Tang, Tomohiro Kita, Hirohito Yamada

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

We propose a narrow-spectral-linewidth silicon photonic wavelength-tunable laser with a novel external wavelength- tunable filter, which consists of two silicon ring resonators with different circumferences and a highly asymmetric Mach-Zehnder interferometer (MZI), the two optical paths of which have significantly different lengths. Calculations and experimental results indicated that the gain difference between longitudinal modes was increased by the highly asymmetric MZI. Consequently, a narrow spectral linewidth of 12 kHz and a stable single-mode oscillation were obtained.

Original languageEnglish
Pages (from-to)1504-1507
Number of pages4
JournalOptics Letters
Volume40
Issue number7
DOIs
Publication statusPublished - 2015 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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