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SBS Gain Suppression in a Passive Single-Mode Optical Fiber by the Multi-Mode Acoustic Waveguide Design

A novel method of stimulated Brillouin scattering (SBS) gain suppression in passive single-mode optical fibers is proposed and experimentally verified. The effect is achieved due to special propagation conditions created for a number of the core-bounded acoustic modes effectively involved in the SBS, such that its gain becomes approximately evenly distributed over a wide spectral range, thereby proportionally reducing its maximum. To verify and investigate this method in depth, single-mode large-mode-area (LMA) fibers with correspondingly optimized acoustic index profiles are fabricated, experimentally tested, and analyzed. Uneven complex doping of the core with two additives, P 2 O 5 and F, forms a high-contrast gradient acoustic index profile while maintaining a quasi-uniform optical refractive index profile. With a contrast of P 2 O 5 of more than 6 mol.%, we achieved 8 dB of SBS suppression over conventional uniformly doped LMA fibers. Moreover, it is shown that more than 10 dB of SBS gain suppression can be achieved if the optimal dopant distribution is realized.

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Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.39 No.2 January 15 2021

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 592 - 599

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

STIMULATED BRILLOUIN SCATTERING
BRILLOUIN GAIN SPECTRUM
ACOUSTIC INDEX PROFILE
FIBER ACOUSTIC MODES
SBS GAIN SUPPRESSION
SINGLE-MODE OPTICAL FIBERS

Info Detail Spesifik

DOI: 10.1109/JLT.2020.3031726

Pernyataan Tanggungjawab

Sergey V. Tsvetkov, Maxim M. Khudyakov, Alexey S. Lobanov, Denis S. Lipatov, Mikhail M. Bubnov, Alexey N. Guryanov, Valery Temyanko, Mikhail E. Likhachev

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