Simultaneous wavelength locking of microring modulator array with a single monitoring signal

Po Dong, Robert Gatdula, Kwangwoong W. Kim, Jeffrey H. Sinsky, Argishti Melikyan, Young-Kai Chen, Guilhem de Valicourt, Jeffrey Lee

Research output: Contribution to journalArticleAcademicpeer-review

32 Citations (Scopus)

Abstract

A microring modulator array coupled to a common bus waveguide can be used to construct low power, compact and flexible wavelength-division-multiplexing (WDM) transmitters. However, due to extremely small working bandwidths of the rings, it is challenging to find the right resonant wavelength setting and locking the resonance to an external laser. In the paper, we propose a novel technique enabling simultaneous wavelength locking of a microring modulator array with a single monitor, together with automatically optimizing the wavelength setting. We experimentally demonstrate locking three rings over a temperature range >40 °C at 3x20 Gb/s on-off-keying (OOK) modulation and ~3x75 Gb/s discrete multi-tone (DMT) modulation.

Original languageEnglish
Pages (from-to)16040-16046
Number of pages7
JournalOptics Express
Volume25
Issue number14
DOIs
Publication statusPublished - 10 Jul 2017
Externally publishedYes

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