Fabrication of 1 × 2 interleaver by parallel-coupled microring resonator

✍ Scribed by Toshinobu Ito; Yasuo Kokubun

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 904 KB
• Volume: 89
• Category: Article
• ISSN: 8756-663X
• DOI: 10.1002/ecjb.20171

✦ Synopsis

Abstract

For narrower wavelength spacing in order to allow a further increase of communication capacity for optical communications, interleavers are used in addition to wavelength multiplexer/demultiplexers. The wavelength filters for an interleaver are required to have characteristics in which box‐shaped filtering characteristics with a narrow bandwidth appear alternatively and periodically. A ring resonator filter can be made to have a box‐shaped filter characteristic by higher‐order cascading so that the peaks appear periodically in wavelength. By using these properties, an interleaver with fourth‐order parallel ring resonators is proposed. A 1 × 2 interleaver is fabricated for trial by a design that expands the fabrication tolerance by using an improved waveguide pattern. The interleave characteristics of the spectrum are demonstrated. © 2006 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 89(3): 56–64, 2006; Published online in Wiley InterScience (www.interscience. wiley.com). DOI 10.1002/ecjb.20171