Polarization-independent low-crosstalk operation of InAlGaAs-InAlAs mach-zehnder interferometer-type photonic switch with hybrid waveguide structure

Yuta Ueda, Shinya Nakamura, Shinji Fujimoto, Hiroto Yamada, Katsuyuki Utaka, Takashi Shiota, Takeshi Kitatani

研究成果: Article

16 被引用数 (Scopus)

抄録

In this letter, we demonstrated a Mach-Zehnder interferometer-type photonic switch using multimode interference (MMI) couplers with InAlGaAs-InAlAs compound semiconductor materials. A hybrid-waveguide structure with different etching depths was adopted for MMI couplers and other parts of the waveguides for polarization-independent operation. As a result, low-crosstalk switching operation of less than -20 dB was confirmed regardless of polarizations of an input light. Switching currents were, respectively, 5.25 and 4.75 mA for TE and TM modes of the input light. High-speed switching operation with about 3-ns transition time was also confirmed.

本文言語English
ページ(範囲)1118-1120
ページ数3
ジャーナルIEEE Photonics Technology Letters
21
16
DOI
出版ステータスPublished - 2009 8 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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