Open AccessOn-chip 1 by 8 coarse wavelength division multiplexer and multi-wavelength source on ultra-silicon-rich nitride
Author(s) -
George Feng Rong Chen,
Ju Won Choi,
E. Şahin,
Doris K. T. Ng,
Dawn T. H. Tan
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.023549
Subject(s) - multiplexer , wavelength division multiplexing , supercontinuum , optics , channel spacing , optical add drop multiplexer , multiplexing , materials science , wavelength , optoelectronics , arrayed waveguide grating , telecommunications , computer science , optical performance monitoring , physics , photonic crystal fiber
An 8-channel coarse wavelength division multiplexer (CWDM) based on coupled vertical gratings has been designed, fabricated and characterized. The devices are implemented on the ultra-silicon-rich nitride (USRN) platform. The demonstrated device possesses 8 CWDM channels. The absence of free spectral range (FSR) enabled the overall multiplexed bandwidth to span across the S + C + L bands. The CWDM channels meet the specifications stipulated by the International Telecommunications Union G.694.2 standard. The average channel crosstalk is -25dB. Pseudo-Random Bit Sequence 2 31 -1 Non-Return-Zero data at 30Gb/s was launched into the device and a clear eye diagram was obtained. The device was further used with a USRN waveguide generating supercontinuum to create a multi-wavelength source emitting light at 8 CWDM wavelengths.