Open AccessMultichannel OADM using cascaded Bragg grating/Mach–Zehnder interferometers in SOI
Author(s) -
Wang J.,
Chen L.R.
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2015.1928
Subject(s) - fiber bragg grating , silicon on insulator , astronomical interferometer , mach–zehnder interferometer , optics , grating , physics , optical circulator , optical add drop multiplexer , wavelength division multiplexing , materials science , interferometry , electronic engineering , optoelectronics , optical fiber , engineering , optical performance monitoring , silicon , wavelength
Multichannel optical add–drop multiplexers (OADMs) based on cascaded Bragg grating/Mach–Zehnder interferometers in silicon‐on‐insulator are reported. The OADMs are fabricated using electron beam lithography with a single etch. Three add–drop channels at wavelengths of 1542.5, 1557.0, and 1570.4 nm, each with a 3 dB bandwidth (BW) of 4 nm are obtained. All channels exhibit a transmission isolation of >20 dB, an interferometric crosstalk of <−30 dB, and a bandwidth utilisation factor of >0.5.