Abstract

All-optical switching of 75 fs pulses centered at 1560 nm, driven by 270 fs, 1030 nm pulses in a dual-core optical fiber exhibiting high index contrast is presented. The fiber is made of a thermally matched pair of lead silicate and borosilicate glasses used as core and cladding material, respectively. The novel switching approach is based on nonlinear balancing of dual-core asymmetry, by control pulse intensity induced group velocity reduction of the fast fiber channel. Due to the fiber core made of soft glass with high nonlinearity high switching contrast exceeding 20 dB is reached by using control pulses of only few nanojoule energy. The optimum fiber length is 14 mm, which closely match the calculated coupling length at the signal wavelength. The results express significant progress in comparison to similar studies based on self-switching of solitonic pulses in dual-core fibers and represent high application potential.

Analysis of high-contrast all-optical dual-wavelength switching in asymmetric dual-core fibers

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Opt. Lett. 49(1) 149-152 (2024)

Complex study of solitonic ultrafast self-switching in slightly asymmetric dual-core fibers

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Appl. Opt. 60(32) 10191-10198 (2021)

Ultrafast multi-wavelength switch based on dynamics of spectrally-shifted solitons in a dual‑core photonic crystal fiber

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Opt. Express 22(25) 31092-31101 (2014)

Reversible ultrafast soliton switching in dual-core highly nonlinear optical fibers

Viet Hung Nguyen, Le Xuan The Tai, Ignac Bugar, Mattia Longobucco, Ryszard Buczyński, Boris A. Malomed, and Marek Trippenbach
Opt. Lett. 45(18) 5221-5224 (2020)

Fabrication and characterization of large numerical aperture, high-resolution optical fiber bundles based on high-contrast pairs of soft glasses for fluorescence imaging

B. Morova, N. Bavili, O. Yaman, B. Yigit, M. Zeybel, M. Aydın, B. Dogan, R. Kasztelanic, D. Pysz, R. Buczynski, and A. Kiraz
Opt. Express 27(7) 9502-9515 (2019)