Precise control of wavelength channel spacing of microring resonator add-drop filter array

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

72 Scopus Citations
View graph of relations

Author(s)

  • Shuichi Suzuki
  • Yutaka Hatakeyama
  • Yasuo Kokubun
  • Sai Tak Chu

Detail(s)

Original languageEnglish
Pages (from-to)745-750
Journal / PublicationJournal of Lightwave Technology
Volume20
Issue number4
Publication statusPublished - Apr 2002
Externally publishedYes

Abstract

The vertically coupled microring resonator filter is an attractive add-drop wavelength filter due to its functionality and compactness and the possibility of dense integration resulting from the cross-grid configuration. However, in the concatenated 1 × 8 filter array in which the ring radii are changed with the increments of 50 nm, the wavelength channel spacing was limited to 5.7 nm due to the resolution limit of photomask (50 nm). Therefore, we developed a new technique to control precisely the channel spacing by an ultraviolet (UV)-trimming technique using polysilane as the overcladding layer. As a result, we successfully decreased the channel spacing to 0.5 nm, and also controlled the channel spacing precisely to 1.0 nm using the same trimming technique.

Research Area(s)

  • Add-drop filter, Microring resonator, Optical waveguide device, Polysilane, Ultraviolet (UV) trimming

Citation Format(s)

Precise control of wavelength channel spacing of microring resonator add-drop filter array. / Suzuki, Shuichi; Hatakeyama, Yutaka; Kokubun, Yasuo; Chu, Sai Tak.

In: Journal of Lightwave Technology, Vol. 20, No. 4, 04.2002, p. 745-750.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review