Strategy of full-C-band fast wavelength switching and aging mitigation at tunable DFB laser array with current/temperature cooperative control

Shenghong Ye, Ming Che, Amalina Athira Ibrahim, Kazutoshi Kato

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

We proposed a current/temperature cooperative control to solve the problem of laser aging in the conventional fast wavelength switching method when injecting a larger current at the tunable distributed feedback (DFB) laser array (TLA). Previously, we demonstrated a 400 GHz wide uni-directional switching at a single DFB laser in the TLA with the cooperative control, which switched fastly and retarded laser aging. For large-scale optical communication systems, we have improved the cooperative control method and expanded its application scenarios. In this paper, we not only proposed and achieved bi-directional wavelength switching with cooperative control at a single DFB laser but also realized bi-directional wavelength switching with cooperative control covering full-C-band at two DFB lasers of the TLA. We demonstrated that the switching time is less than 200 ms and estimated that the TLA's lifetime is improved by more than 40 times.

Original languageEnglish
Article numberSK1012
JournalJapanese journal of applied physics
Volume61
Issue numberSK
DOIs
Publication statusPublished - Aug 1 2022

All Science Journal Classification (ASJC) codes

  • General Engineering
  • General Physics and Astronomy

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