Open AccessExperimental demonstration of an optical quantizer with ENOB of 3.31 bit by using a cascaded step-size MMI
Author(s) -
Chang Liu,
Jifang Qiu,
Ye Tian,
Ran Tao,
Yue Liu,
Yan He,
Bowen Zhang,
Yan Li,
Jian Wu
Publication year - 2021
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.413799
Subject(s) - effective number of bits , materials science , cascade , wafer , optoelectronics , optics , electronic engineering , physics , chemistry , cmos , chromatography , engineering
We experimentally demonstrated an optical phase shifted quantizer using a cascade step-size MMI (CS-MMI), which was fabricated on a commercially available 220-nm SOI platform via multi-project wafer (MPW) process. An experimental setup was built to test the ability of the CS-MMI acting as a quantizer. The experimental results show that the proposed CS-MMI-based quantizer has an effective number of bit (ENOB) of 3.31bit, which is a little slighter than the ideal ENOB of 3.32bit. The operation range is 12 nm for ENOB≥3 bit. Moreover, the insertion loss of the CS-MMI is -1.26 dB at 1560 nm, the performance of the fabricated device agrees well with simulation results.