Abstract

This paper reports on the simulation of the dc and transient performance of a p+-i-n+ single-mode optical phase modulator suitable for silicon-on-insulator material. An analysis of the variation in the dc and transient performance due to trench isolation has been carried out. The device has been modeled using the two-dimensional device simulation package SILVACO. SILVACO has been employed to investigate the overlap between the injected free carriers in the intrinsic region and the propagating optical mode. On forward bias of the device, free carriers are injected into the intrinsic guiding region of the device, resulting in a change in the refractive index of this region. The device studied is designed to support a single optical mode and is of multimicrometer dimensions, thus simplifying fabrication and allowing efficient coupling to/from single-mode fibers or other single-mode devices. The modeling indicates that increased dc device performance of up to 74% results from a vertical trench defined adjacent to the outer edge of the contact region,as compared to a device without trench isolation. For the same conditions an increase in the transient performance of 18% is also observed.

[IEEE ]

Electro-optical modulation at 1550 nm in an as-deposited hydrogenated amorphous silicon p-i-n waveguiding device

Francesco G. Della Corte, Sandro Rao, Giuseppe Coppola, and Caterina Summonte
Opt. Express 19(4) 2941-2951 (2011)

Silicon electro-optic modulators using p-i-n diodes embedded 10-micron-diameter microdisk resonators

Linjie Zhou and Andrew W. Poon
Opt. Express 14(15) 6851-6857 (2006)

Influence of carrier lifetime on performance of silicon p-i-n variable optical attenuators fabricated on submicrometer rib waveguides

Sungbong Park, Koji Yamada, Tai Tsuchizawa, Toshifumi Watanabe, Hiroyuki Shinojima, Hidetaka Nishi, Rai Kou, and Sei-ichi Itabashi
Opt. Express 18(11) 11282-11291 (2010)

Matching p-i-n-junctions and optical modes enables fast and ultra-small silicon modulators

Stefan Meister, Hanjo Rhee, Aws Al-Saadi, Bülent A. Franke, Sebastian Kupijai, Christoph Theiss, Lars Zimmermann, Bernd Tillack, Harald H. Richter, Hui Tian, David Stolarek, Thomas Schneider, Ulrike Woggon, and Hans J. Eichler
Opt. Express 21(13) 16210-16221 (2013)

Optical autocorrelation performance of silicon wire p-i-n waveguides utilizing the enhanced two-photon absorption

Guangwei Cong, Morifumi Ohno, Yuriko Maegami, Makoto Okano, and Koji Yamada
Opt. Express 24(26) 29452-29458 (2016)