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Title
Japanese: 
English:GaInAsP/InP MZI waveguide optical isolator integrated with spot size converter 
Author
Japanese: 蘇武洋平, 庄司 雄哉, 櫻井 一正, 水本 哲弥.  
English: Yohei Sobu, Yuya Shoji, Kazumasa Sakurai, Tetsuya Mizumoto.  
Language English 
Journal/Book name
Japanese: 
English:Optics Express 
Volume, Number, Page Vol. 21    No. 13    pp. 15373-15381
Published date June 20, 2013 
Publisher
Japanese: 
English:The Optical Society (OSA) 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
DOI https://doi.org/10.1364/OE.21.015373
Abstract We fabricated a waveguide optical isolator with a GaInAsP guiding layer integrated with spot size converters (SSCs) for efficient coupling to optical fibers. The isolator is constructed with a Mach–Zehnder interferometer (MZI), which is composed of multi-mode interference (MMI) couplers, as well as nonreciprocal and reciprocal phase shifters. The nonreciprocal phase shifter is constructed with a magneto-optical cladding layer directly bonded to a semiconductor guiding layer. The performance of the GaInAsP waveguide optical isolator was demonstrated with a maximum optical isolation of 28.3 dB at a wavelength of 1558 nm for the TM mode.

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