Ultrafast measurement of vector spatial modes by using two-dimensional linear optical sampling

Autor:	Shuki Okamura, Kyogo Osawa, Chao Zhang, Fumihiko Ito, Atsushi Nakamura, Yusuke Koshikiya
Rok vydání:	2023
Předmět:	Atomic and Molecular Physics and Optics
Zdroj:	Optics Letters. 48:2551
ISSN:	1539-4794 0146-9592
DOI:	10.1364/ol.490009
Popis:	To the best of the authors’ knowledge, we present the first-ever demonstration of the two-dimensional linear optical sampling of fiber spatial modes. The images of the fiber cross sections excited by the LP01 or LP11 modes are directly projected onto a two-dimensional photodetector array and coherently sampled by local pulses with a uniform spatial distribution. Consequently, the spatiotemporal complex amplitude of the fiber mode is observed with a time resolution of a few picoseconds by using electronics with a bandwidth of only a few MHz. Such ultrafast and direct observation of vector spatial modes enables the characterization of the space-division multiplexing fiber itself with high time accuracy and wide bandwidth.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::522194aad6a668393b92d1f5176c4c32 https://doi.org/10.1364/ol.490009 Zobrazit plný text záznamu