Millimeter-wave transition of coplanar line to substrate-integrated LiNbO3 waveguide for traveling-wave electro-optical modulator

✍ Scribed by Ebrahim Mortazy; Feng Xu; Michel Meunier; Ke Wu

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 199 KB
• Volume: 51
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.24229

✦ Synopsis

Abstract

In this article, a transition of coplanar line to substrate‐integrated waveguide onto electro‐optical LiNbO~3~ substrate for the design of traveling‐wave optical phase modulator at 60 GHz were proposed, designed, and fabricated for the first time. Micromachining of the LiNbO~3~ substrate, which is transparent to a wide range of laser wavelengths, was done by using Excimer laser. Metallized via holes around the coplanar line are considered for the purpose of mode suppression. Also, a cavity resonator was designed to increase the circuit bandwidth. Measurement results show about 5 GHz bandwidth for the demonstrated substrate‐integrated electro‐optical waveguide. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1105–1107, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24229