线双折射磁光光纤光栅中光的偏振特性

Wu, 武保剑 Baojian; Li, 李崇真 Chongzhen; Qiu, 邱昆 Kun; Cheng, 程立伟 Liwei

doi:10.3788/col201109.010601

中国光学快报

2011

DOI: 10.3788/col201109.010601

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线双折射磁光光纤光栅中光的偏振特性

武保剑 Baojian Wu¹,

李崇真 Chongzhen Li²,

邱昆 Kun Qiu³

et al.

Abstract: The coupling between guided optical waves in magneto-optic fiber Bragg gratings (MFBGs) with linear birefringence is investigated using the eigen-mode and coupled-mode approaches. The relationship between the polarization-dependent loss (PDL) and the eigen states of polarization (SOPs) in the MFBGs is discussed. Only the MFBGs with low linear birefringence are applied to the peak PDL-based magnetic field measurement, after which the linear dynamic range is determined using the relative magnitude of linear and … Show more

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Cited by 5 publications

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References 14 publications

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“…33) For a birefringent waveguide both the linear birefringence and the magnetically induced circular birefringence exist when the external magnetic field is applied. 34) For this case, we consider the linearly polarized light, i.e.…”

mentioning

confidence: 99%

Tunable slow and fast light in a magneto-optic micro-ring resonator

Wen

Guo

Geng

et al. 2019

Appl. Phys. Express

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We propose a magneto-optic micro-ring resonator (MO-MRR) structure to perform the slow-to-fast light transition and obtain the tunable delay time from +4 ns to −4 ns. We quantify the power and bandwidth variations with the applied magnetic field and locate a broadening bandwidth area in the fast-light region. We optimize the azimuth angle of input light, i.e. 45°-linearly polarized light, to significantly reduce the required magnetic induction for the status transition by 71%. The results of the MO-MRR scheme support the implementation of the MO-induced tunable integration chip for microwave photonic applications.

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mentioning

confidence: 99%

Tunable slow and fast light in a magneto-optic micro-ring resonator

Wen

Guo

Geng

et al. 2019

Appl. Phys. Express

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Coupled-mode theory for magneto-optical fiber Bragg grating under non-uniform magnetic field

Fen

2011

Optoelectron. Lett.

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CAccording to the perturbation theory, the coupled-mode equations for guided optical waves in the magneto-optical fiber Bragg gratings (MFBGs) under non-uniform magnetic field are derived. The equivalent relation between the magneticallyinduced non-uniform fiber Bragg grating (MnFBG) and the corresponding non-magnetic chirped grating is expressed and verified by the piecewise-uniform MFBG model under linear magnetic field. On the basis of the equivalent relation, the MnFBGs can be effectively investigated by means of simulations. The characteristics of the MnFBGs under three typical magnetic field distributions with application to optical pulse compression are simulated, and the minimal pulse width can be achieved for the same magneto-optical coupling parameter of 2.2 10 3 m -1 .The chirped fiber Bragg gratings (FBGs) have been widely used in the dispersion management [1][2][3][4] for optical fiber communications. The tunable chirped optical fiber grating becomes a trend, especially for the dynamic and flexible optical networks [5,6] . The theoretical model of uniform magneto-optical FBG (MFBG) with linear birefringence has been put forward [7,8] , and the magnetic control of the MFBG's photonic bandgap for use in optical signal processing has been also investigated [9,10] . However, to our knowledge, the non-uniformly magnetized MFBG, also named magnetically-induced non-uniform FBG (MnFBG), has not been taken into account based on the coupled-mode theory until now. In this paper, it will be shown that a chirped MnFBG may be equivalent to a non-magnetic chirped FBG, whose chirp phase is the sum of the initial phase of the MnFBG and the integral of the magneto-optical (MO) coupling coefficients along the whole grating. And then, one can easily establish the MnFBG's simulation model by means of the commercially available simulation softwares for optical communication. As an example, the pulse compression characteristics of the MnFBGs under three typical magnetic field distributions are discussed.The MFBGs with large MO coefficient can be achieved by writing grating in terbium-doped or yttrium iron garnet *

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Magnetically-induced circular-polarization-dependent loss of magneto-optic fiber Bragg gratings with linear birefringence

Wen

Qiu

et al. 2013

Optical Fiber Technology

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线双折射磁光光纤光栅中光的偏振特性

Cited by 5 publications

References 14 publications

Tunable slow and fast light in a magneto-optic micro-ring resonator

Tunable slow and fast light in a magneto-optic micro-ring resonator

Coupled-mode theory for magneto-optical fiber Bragg grating under non-uniform magnetic field

Magnetically-induced circular-polarization-dependent loss of magneto-optic fiber Bragg gratings with linear birefringence

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