Title :
Multichannel OADM using cascaded Bragg grating/Mach–Zehnder interferometers in SOI
Author :
Wang, J. ; Chen, L.R.
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
Abstract :
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.
Keywords :
Bragg gratings; Mach-Zehnder interferometers; cascade networks; electron beam lithography; etching; multiplexing equipment; silicon-on-insulator; Mach-Zehnder interferometer; SOI; add-drop channel; cascaded Bragg grating; electron beam lithography; interferometric crosstalk; multichannel OADM; optical add-drop multiplexer; silicon-on-insulator; single etching; transmission isolation; wavelength 1542.5 nm; wavelength 1557.0 nm; wavelength 1570.4 nm;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2015.1928
