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Proceedings Paper • Open Access

Passively biased resonantly enhanced silicon photonics modulator with high optical bandwidth
Author(s): Sebastian Romero-García; Alvaro Moscoso-Mártir; Saeed Sharif Azadeh; Bin Shen; Jovana Nojic; Florian Merget; Jeremy Witzens

Paper Abstract

Ring resonator modulators reach high modulation efficiencies, are very compact and can be electrically driven as lumped elements. However, their limited optical bandwidth requires temperature stabilization, limiting their power efficiency. A novel ring assisted Mach-Zehnder modulator (MZM) aggressively reduces power consumption. Moreover, an integration scheme passively sets the 3 dB point during attachment of the input fiber relative to a multimode grating coupler used as the first splitter element of the interferometer. Straight phase shifters are replaced by arrays of highly overcoupled resonators maintaining a sufficiently high finesse and a substantial resonant enhancement while minimizing the excess losses at the resonator to waveguide junctions. A large resonance bandwidth compatible with thermal operation over 50 °C without dynamic compensation is obtained together with a factor larger than four in the reduction of power consumption relative to a conventional MZM.

Paper Details

Date Published: 13 March 2017
PDF: 14 pages
Proc. SPIE 10108, Silicon Photonics XII, 1010802 (13 March 2017); doi: 10.1117/12.2253845
Show Author Affiliations
Sebastian Romero-García, RWTH Aachen Univ. (Germany)
Alvaro Moscoso-Mártir, RWTH Aachen Univ. (Germany)
Saeed Sharif Azadeh, RWTH Aachen Univ. (Germany)
Bin Shen, RWTH Aachen Univ. (Germany)
Jovana Nojic, RWTH Aachen Univ. (Germany)
Florian Merget, RWTH Aachen Univ. (Germany)
Jeremy Witzens, RWTH Aachen Univ. (Germany)


Published in SPIE Proceedings Vol. 10108:
Silicon Photonics XII
Graham T. Reed; Andrew P. Knights, Editor(s)

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