Abstract

We report a new fiber concept, which is a hybrid design between classical step-index and photonic crystal fibers (PFCs). The proposed structure has a centrally located Ge doped core surrounded by a set of smaller microinclusions distributed in the cladding. In numerical investigations, we demonstrate that such a combination allows to arbitrarily shape the dispersion profile in a 1 μm wide spectral range while reducing the confinement losses with respect to air-hole PCFs exhibiting similar dispersion characteristics. We present simple guidelines for optimizing the structure. Finally, as a proof of concept, we show an adequately designed fiber which, even though is based on fused silica glasses and is an all-solid construction, is still capable of providing flat and all-normal dispersion characteristics (−37 ± 2.5 ps/nm/km) in broadband range from 1.3–2.15 μm and ultra-flat (−37 ± 0.2 ps/nm/km) for wavelength values from 1.5–1.9 μm.

All-glass hybrid fibers for dispersion management [Invited]

Svetlana Aleshkina and Mikhail Likhachev
J. Opt. Soc. Am. B 38(12) F115-F121 (2021)

Dispersion management with microstructured optical fibers: ultraflattened chromatic dispersion with low losses

G. Renversez, B. Kuhlmey, and R. McPhedran
Opt. Lett. 28(12) 989-991 (2003)

Dispersion-managed soliton interactions in optical fibers

T. Yu, E. A. Golovchenko, A. N. Pilipetskii, and C. R. Menyuk
Opt. Lett. 22(11) 793-795 (1997)

Soliton interaction in strongly dispersion-managed optical fibers

Shiva Kumar, Matthias Wald, Falk Lederer, and Akira Hasegawa
Opt. Lett. 23(13) 1019-1021 (1998)

Dispersion management for randomly varying optical fibers

Mark J. Ablowitz and Jamison T. Moeser
Opt. Lett. 29(8) 821-823 (2004)