Wavelength locking of silicon photonics multiplexer for DML-based WDM transmitter

Grillanda, S. et al. (2017) Wavelength locking of silicon photonics multiplexer for DML-based WDM transmitter. Journal of Lightwave Technology, 35(4), pp. 607-614. (doi:10.1109/JLT.2016.2641163)

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Abstract

We present a wavelength locking platform enabling the feedback control of silicon (Si) microring resonators (MRRs) for the realization of a 4 × 10 Gb/s wavelength-division-multiplexing (WDM) transmitter. Four thermally tunable Si MRRs are employed to multiplex the signals generated by four directly modulated lasers (DMLs) operating in the L-band, as well as to improve the quality of the DMLs signals. Feedback control is achieved through a field-programmable gate array controller by monitoring the working point of each MRR through a transparent detector integrated inside the resonator. The feedback system provides an MRR wavelength stability of about 4 pm (0.5 GHz) with a time response of 60 ms. Bit error rate (BER) measurements confirm the effectiveness and the robustness of the locking system to counteract sensitivity degradations due to thermal drifts, even under uncooled operation conditions for the Si chip.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Klitis, Mr Charalambos and Sorel, Professor Marc and Holmes, Dr Barry
Authors: Grillanda, S., Ji, R., Morichetti, F., Carminati, M., Ferrari, G., Guglielmi, E., Peserico, N., Annoni, A., Dede, A., Nicolato, D., Vannucci, A., Klitis, C., Holmes, B., Sorel, M., Fu, S., Man, J., Zeng, L., Sampietro, M., and Melloni, A.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Journal of Lightwave Technology
Publisher:IEEE
ISSN:0733-8724
ISSN (Online):1558-2213
Published Online:18 December 2016
Copyright Holders:Copyright © 2017 IEEE
First Published:First published in Journal of Lightwave Technology 35(4):607-614
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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