Vertical to surface transmission electro-photonic device (VSTEP) for optical interconnection and switching systems

Kenichi Kasahara, Takahiro Numai, Ichiro Ogura, Hideo Kosaka, Kaori Kurihara, Mitsunori Sugimoto, Sigeru Kawai, Yutaka Yamanaka, Makoto Nishio, Syuji Suzuki, Keiichi Kubota

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)

Abstract

With the focus primarily on the laser-mode VSTEP (Vertical to Surface Transmission Electro-Photonic device) with high-intensity light output and narrow optical beam divergence, design features such as threshold gain and optical absorptivity, device fabrication, and characteristics are reported. A 20 μm-square VSTEP with an optimized vertical-cavity structure demonstrates a low optical switching energy of 2.2 pJ together with a low threshold current. In order to lower the series resistance, and to improve electrical-to-optical power conversion efficiency ηT,a double mesa structure VSTEP is fabricated. The whole mesa is covered with Au to utilize the threshold reduction by photon recycling. As a result, ηT has been improved to 11% at 1 mW light output. A new optically self-routing switch has been demonstrated by using the laser-mode VSTEPs. The optical data rate is 1.6 Gbps.

Original languageEnglish
Title of host publicationNEC Research and Development
Pages424-437
Number of pages14
Volume33
Edition3
Publication statusPublished - 1992 Jul 1

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Kasahara, K., Numai, T., Ogura, I., Kosaka, H., Kurihara, K., Sugimoto, M., Kawai, S., Yamanaka, Y., Nishio, M., Suzuki, S., & Kubota, K. (1992). Vertical to surface transmission electro-photonic device (VSTEP) for optical interconnection and switching systems. In NEC Research and Development (3 ed., Vol. 33, pp. 424-437)