An athermal delay interference circuit using trenches filled with low-refractive index material

Kenji Iwamoto, Jiro Ito, Hiroyuki Tsuda

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Abstract: Recently, various types of silica-based planar lightwave circuits (PLCs) have been used for optical networks. However, silica exhibits large temperature dependence, so the temperature of silica- based PLCs needs to be controlled. We can reduce the cost and the energy budget of optical equipment by using athermal waveguides. We propose an athermal optical waveguide comprised of trenches filled with low-refractive index material. The propagation constant of the waveg- uide is determined by the refractive indices of the core and the low- refractive index material; their thermo-optic coefficients have opposite signs, and therefore the temperature dependence of the waveguide can be suppressed. A 1-bit delay circuit was designed for a 12.5Gbit/s dif- ferential phase shift keying receiver using the athermal waveguide, and it displayed a wide operating temperature range.

本文言語English
ページ(範囲)1769-1773
ページ数5
ジャーナルIEICE Electronics Express
6
24
DOI
出版ステータスPublished - 2009 12 25

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

フィンガープリント

「An athermal delay interference circuit using trenches filled with low-refractive index material」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル