Series-coupled microring resonator filters with embedded semiconductor optical amplifiers

✍ Scribed by Otto Schwelb; István Frigyes

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 256 KB
• Volume: 42
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.20326

✦ Synopsis

Abstract

Back reflections from series‐coupled optical microring resonator filters caused by waveguide discontinuities are numerically investigated and optimized. The focus is on small discontinuities, such as those that can be expected from GaInAsP/InP‐based semiconductor optical amplifiers (SOAs) embedded in ring resonators. Significant improvement of the return loss is obtained when the length of the SOA is appropriately chosen. The design principle is applied to both all‐pass (two‐port) and add/drop (four‐port) filters. The sensitivity of the design to fabrication parameters is discussed. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 42: 427–432, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20326