Properties of elliptical-core two-mode fiber

Wang, Zhi; Ju, Jian; Jin, Wei

doi:10.1364/opex.13.004350

Cited by 17 publications

(7 citation statements)

References 13 publications

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“…x and LP 01 y modes [12]. Also, our results show that within wavelengths longer than critical value (1250 nm), for the two orthogonal polarization modes of LP 01 , increasing mode enlargement is observed (see Fig.…”

Section: Simulationsupporting

confidence: 65%

Group Polarimetric Pressure Sensitivity of an Elliptical-Core Side-Hole Fiber at Telecommunication Wavelengths

Sadeghi

Latifi

Murawski

et al. 2016

IEEE J. Select. Topics Quantum Electron.

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In this paper, we experimentally studied group polarimetric pressure sensitivity of a fabricated elliptical-core side-hole fiber (EC-SHF). We investigated the polarimetric behavior of this fiber under three steps of chosen pressure intervals of 100 to 104 lbf/in 2 , 1000 to 1004 lbf/in 2 , and 2000 to 2004 lbf/in 2 , respectively. We obtained high group polarimetric sensitivity from 2.6 × 10 −7 (3.7 × 10 −5 MPa −1 ) to 3 × 10 −7 (lbf/in 2 ) -1 (4.3 × 10 −5 MPa −1 ) under 100 to 104 lbf/in 2 pressure interval, which decreased under upper pressure intervals. We carried out a simulation to understand the reason for change of polarimetric sensitivity at telecommunication wavelengths (1550-nm region) and also the relationship between the group birefringence variation and increasing pressure. For this purpose, by using finite-element method, we demonstrate the effects of structural deformation and stress variation of EC-SHF cross section on spectral transformation of fundamental polarization modes. Our simulation and experimental results are in agreement with each other and indicate that under different pressure intervals, shorter wavelengths have more birefringence variation and pressure sensitivity than longer wavelengths. These results show that changing the group birefringence and pressure sensitivity in lower pressure are higher than the upper ones.Index Terms-Elliptical core side-hole fiber, finite element method, group polarimetric sensitivity, telecommunication wavelengths.

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Section: Simulationsupporting

confidence: 65%

Group Polarimetric Pressure Sensitivity of an Elliptical-Core Side-Hole Fiber at Telecommunication Wavelengths

Sadeghi

Latifi

Murawski

et al. 2016

IEEE J. Select. Topics Quantum Electron.

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“…Thus, modes LP [35]. In order to specify the effective refractive index of propagating modes in highly birefringent fibers, we use a simple model based on the treatment for circularly symmetric step index fibers in the weakly guiding approximation [19].…”

Section: Simplified Model For Dispersion Properties Of Birefringenmentioning

confidence: 99%

Photon-pair generation by intermodal spontaneous four-wave mixing in birefringent, weakly guiding optical fibers

Garay-Palmett¹,

Cruz-Delgado²,

Domínguez-Serna³

et al. 2016

Phys. Rev. A

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We present a theoretical and experimental study of the generation of photon pairs through the process of spontaneous four wave mixing (SFWM) in a few-mode, birefringent fiber. Under these conditions, multiple SFWM processes are in fact possible, each associated with a different combination of transverse modes for the four waves involved. We show that in the weakly guiding regime, for which the propagation modes may be well approximated by linearly polarized modes, the departure from circular symmetry due to the fiber birefringence translates into conservation rules which retain elements from azimuthal and rectangular symmetries: both OAM and parity must be conserved for a process to be viable. We have implemented a SFWM source based on a "bow-tie" birefringent fiber, and have measured for a collection of pump wavelengths the SFWM spectra of each of the signal and idler photons in coincidence with its partner photon. We have used this information, together with knowledge of the transverse modes into which the signal and idler photons are emitted, as input for a genetic algorithm which accomplishes two tasks: i) the identification of the particular SFWM processes which are present in the source, and ii) the characterization of the fiber used.

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“…In [17], multimode elliptical core fibres have been studied using the finiteelement method, for devices and transmission systems that require polarisation control. In [18], elliptical core dual mode fibres are studied for sensing applications. There are a plethora of applications using elliptical fibres, and therefore a method which is easy to implement and offer accuracy for studying the optical properties of such waveguides is valuable.…”

Section: Introductionmentioning

confidence: 99%