Eight-Channel Silicon-Photonic Wavelength Division Multiplexer with 17 GHz Spacing

Dvir Munk; Moshe Katzman; Yuri Kaganovskii; Naor Inbar; Arijit Misra; Mirit Hen; Maayan Priel; Moshe Feldberg; Maria Tkachev; Arik Bergman; Menachem Vofsi; Michael Rosenbluh; Thomas Schneider; Avi Zadok

doi:10.1109/JSTQE.2019.2904437

Eight-Channel Silicon-Photonic Wavelength Division Multiplexer with 17 GHz Spacing

Dvir Munk
, Moshe Katzman
, Yuri Kaganovskii
, Naor Inbar
, Arijit Misra
, Mirit Hen
, Maayan Priel
, Moshe Feldberg
, Maria Tkachev
, Arik Bergman
, Menachem Vofsi
, Michael Rosenbluh
, Thomas Schneider
, Avi Zadok

Tower-Jazz Semiconductor Ltd.
Technical University of Braunschweig
Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

Dense wavelength division multiplexers are key components of data communication networks. This paper presents a silicon-photonic eight-channel multiplexer device with a channel spacing of only 0.133 nm (17 GHz). Devices were fabricated in a commercial silicon foundry, in 8» silicon-on-insulator wafers. The device layout consists of seven unbalanced Mach-Zehnder interferometers in a cascaded tree topology, and each interferometer unit also includes a nested ring resonator element. The transfer function of each unit is that of a maximally flat, auto-regressive, moving-average filter. The devices are characterized by uniform passbands, sharp spectral transitions between pass and stop bands, and strong out-of-band rejection. The worst-case optical power crosstalk is -22 dB. The proper function of the device requires careful control of optical phase delays over 14 distinct optical paths. Post-fabrication trimming of phase delays was performed through local illumination of a photo-sensitive upper cladding layer of chalcogenide glass. The de-multiplexing of three adjacent QAM-16, 40 Gbit/s wavelength-division channels was successfully demonstrated. The devices are applicable in data communication and in integrated-photonic processing of radio-over-fiber waveforms.

Original language	English
Article number	8664601
Journal	Science and Engineering of Composite Materials
Volume	25
Issue number	5
DOIs	https://doi.org/10.1109/JSTQE.2019.2904437
State	Published - 1 Sep 2019

Bibliographical note

Publisher Copyright:
© 1995-2012 IEEE.

Funding

Dr. Hen was the recipient of the Academia-Industry Fellowship for the Promotion of Women in Science from the Israeli Ministry of Science, Technology, and Space in 2017. Manuscript received November 5, 2018; revised January 5, 2019; accepted March 5, 2019. Date of publication March 11, 2019; date of current version April 18, 2019. This work was supported in part by the Israel Science Foundation under Grant 1665/14, in part by the Israel Innovation Authority through PETA CLOUD Consortium, MAGNET Program, and in part by Ministry of Science and Culture (MWK) of Lower Saxony, Germany (GZ 21.1-76251-87150700). (Corresponding author: Avi Zadok).

Funders	Funder number
Israel Innovation Authority
Israeli Ministry of Science, Technology, and Space
Ministry of Science and Culture
Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg	GZ 21.1-76251-87150700
Israel Science Foundation	1665/14

Keywords

Silicon photonics
chalcogenide glasses
data communication
optical communication
optical filters
photonic integrated circuits
wavelength division multiplexing

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10.1109/JSTQE.2019.2904437

Cite this

Munk, D., Katzman, M., Kaganovskii, Y., Inbar, N., Misra, A., Hen, M., Priel, M., Feldberg, M., Tkachev, M., Bergman, A., Vofsi, M., Rosenbluh, M., Schneider, T., & Zadok, A. (2019). Eight-Channel Silicon-Photonic Wavelength Division Multiplexer with 17 GHz Spacing. Science and Engineering of Composite Materials, 25(5), Article 8664601. https://doi.org/10.1109/JSTQE.2019.2904437

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Eight-Channel Silicon-Photonic Wavelength Division Multiplexer with 17 GHz Spacing

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