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1

Transmission stability of chirped dark vector quasi-solitons in birefringent fiber system with nonlinear gain

Xiao Yan, Zhang Jing, He Qi

Optica Applicata

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2021

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Vol. 51, nr 1

51--58

EN

In this article, we consider the coupled Ginzburg–Landau equation with variable coefficients including the nonlinear gain and obtain the exact solutions of chirped dark vector quasi-solitons via the ansatz method. Next, the propagation of chirped dark vector quasi-solitons is discussed to verify whether they can be transmitted stably in the birefringent optical fiber system. The numerical simulation shows that this can be achieved. We deeply add the small perturbation to the transmission of dark vector quasi-solitons to make the results above more general. The results further prove the correctness of our solutions.

2

Transmission of M-type combined solitary wave in the birefringent fiber with comprehensive management

Xiao Yan, Bai Xiao-Qin, Li Chang-Yong, Lv Ting-Ting

Optica Applicata

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2020

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Vol. 50, nr 2

241--250

EN

In this paper, we reveal the transmission properties of the M-type combined solitary wave in birefringent fiber with third-order dispersion, self-frequency shift, self-steepening, fifth-order nonlinearity and the gain (loss) effects. The numerical simulations show that the M-type solitary wave can be stably transmitted through 300 dispersion lengths via balancing the variety of effects. And it can even be stably transmitted under the condition of limited interference under a small perturbation of noise, amplitude and phase position. The results can provide certain references for there search of optical soliton communication and optical devices.

3

Measurement of pressure sensitivity of modal birefringence of birefringent optical fibers using a Sagnac interferometer

Kaczmarek C., Wójcik W.

Optica Applicata

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2015

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Vol. 45, nr 1

5—14

EN

The paper presents a method of measuring the sensitivity of modal birefringence to pressure in birefringent optical fibers, based on a Sagnac interferometer with a birefringent fiber. In this method, the pressure sensitivity of modal birefringence of the optical fiber is determined on the basis of the measurement of the pressure sensitivity of the Sagnac interferometer including the fiber being measured, and the measurement of the group modal birefringence of that fiber, which is also performed by using the Sagnac interferometer. Utilizing the above method, measurements were performed of the pressure sensitivity of modal birefringence of birefringent optical fibers: a photonic crystal fiber and a bow-tie fiber, in the wavelength range 1460–1600 nm. Presented are the results of these measurements and their comparison with the results obtained by using different methods for the same types of fibers.

4

Optical wavelength discriminator based on a Sagnac loop with a birefringent fiber

Kaczmarek C.

Przegląd Elektrotechniczny

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2011

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R. 87, nr 10

325-327

EN

An optical wavelength discriminator based on a Sagnac loop is presented, intended for detecting signals from fiber Bragg gratings sensors. The Sagnac loop was created by connecting the output arms of a 3-dB coupler with a segment of a Panda type birefingent fiber and a fiber polarization controller. The results of measurements of the loop are given along with an example of its application for detecting the signal of a laser strain sensor.

PL

Przedstawiono dyskryminator długości fali oparty na światłowodowej pętli Sagnaca, przeznaczony do detekcji sygnałów czujników ze światłowodowymi siatkami Bragga. Pętlę Sagnaca wykonano przez połączenie wyjściowych ramion sprzęgacza 3-dB z odcinkiem światłowodu dwójłomnego typu Panda i światłowodowym kontrolerem polaryzacji. Przedstawiano wyniki pomiarów pętli i przykład jej zastosowania do detekcji sygnału laserowego czujnika odkształcenia.