An optical parametric Bragg amplifier on a CMOS chip

Autor:	Choi Ju Won, Sohn Byoung-Uk, Sahin Ezgi, Chen George F. R., Xing Peng, Ng Doris K. T., Eggleton Benjamin J., Tan Dawn T. H.
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	bragg gratings cmos compatible devices four-wave mixing nonlinear optics parametric amplification silicon-rich-nitride Physics QC1-999
Zdroj:	Nanophotonics, Vol 10, Iss 13, Pp 3507-3518 (2021)
Druh dokumentu:	article
ISSN:	2192-8614 2021-0302
DOI:	10.1515/nanoph-2021-0302
Popis:	We demonstrate a complementary metal–oxide–semiconductor (CMOS)-compatible optical parametric Bragg amplifier on an ultra-silicon-rich nitride chip. The amplifier design incorporates advantageous group index properties in a nonlinear Bragg grating to circumvent phase matching limitations arising from the bulk material and waveguide dispersion. The grating structure further augments the effective nonlinear parameter of 800 W−1/m, considerably lowering the power required for the observation of strong parametric gain. On/off optical parametric gain of 20 dB is achieved using a low peak power of 1.6 W, in good agreement with numerical calculations. This represents a 7 dB improvement in the parametric gain compared to the absence of grating enhancement which is attributed to the Bragg grating induced superior phase matching.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/1038b08563a24fe7a7fd2fad677327b9 Zobrazit plný text záznamu View record in DOAJ