Circular-Birefringence Fiber for Nonlinear Optical Signal Processing

Tanemura, Takuo; Kikuchi, K.

doi:10.1109/jlt.2006.883641

Cited by 66 publications

(29 citation statements)

References 44 publications

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“…The polarisation states of counter-propagating beams are made different through the use of a quarter-wave retarder (QWR) inserted in the loop after one of the coupler output ports. To prevent the nonlinear polarisation evolution from averaging out for each beam, twist is applied to the fibre, which then becomes optically active and behaves like an ideal isotropic fibre [24]. Starting from the coupled nonlinear differential equations for polarisation evolution in the continuous-wave case [25], a model was proposed in [21], which enabled a thorough study of this promising device (see for example [26][27][28]).…”

Section: Article In Pressmentioning

confidence: 99%

“…Polarisation thus only rotates by $0.05N with respect to the birefringence axes in this case, so that the averaging out of birefringence is less effective. However, considering that the radius of curvature is not too small (say, 30 cm), a moderate twist rate of 1 turn/m can be sufficient to ensure nearly circular birefringence [24]. Taking for example r ¼ 62.5 mm, l 0 ¼ 1.55 mm and R ¼ 30 cm, one finds that the product 0.05NL B E13 is still quite large.…”

Section: Numerical Analysismentioning

confidence: 99%

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Large amplitude noise reduction in ultrashort pulse trains using a power-symmetric nonlinear optical loop mirror

Pottiez

Ibarra-Escamilla

Kuzin

2009

Optics & Laser Technology

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Section: Article In Pressmentioning

confidence: 99%

Section: Numerical Analysismentioning

confidence: 99%

Large amplitude noise reduction in ultrashort pulse trains using a power-symmetric nonlinear optical loop mirror

Pottiez

Ibarra-Escamilla

Kuzin

2009

Optics & Laser Technology

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“…21,22 Our approximation neglects the fiber dispersion and is valid when the pulse widths are sufficiently long to yield a dispersion length longer than the fiber length. 16 The next differential equations describe the polarization states of beams propagating in a birefringent twisted fiber along the z axis in the circular polarization basis:…”

Section: Polarization Equationsmentioning

confidence: 99%

Effect of control-beam polarization and power on optical time-domain demultiplexing in a new nonlinear optical loop mirror design

Grendár¹,

Pottiez

Dado

et al. 2009

Opt. Eng

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Abstract.A new scheme of a control-beam-driven nonlinear optical loop mirror ͑NOLM͒ with a birefringent twisted fiber and a symmetrical coupler designed for optical time division demultiplexing ͑OTDM͒ is analyzed. The theoretical model of the proposed NOLM scheme considers the evolution of polarization states of data and control beams and the mutual interactions of the data and control beams due to the cross-phase modulation ͑XPM͒. Attention is given to the optical switching commanded by the control-beam power and by the manipulation of nonlinear polarization rotation of the data and control beam. The simulations of NOLM transmissions demonstrate that the cross talk between demultiplexed and nondemultiplexed beams as an important parameter for optical switching by the presented NOLM can be significantly reduced. The results show that the device can be of interest for all-optical signal manipulations in optical communication networks.

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“…In this general model, during the production phase, a twisting process of the fiber generates an induced circular birefringence. This production process has the advantage of a PMD decrease [6]. Another advantage of twisted fiber is the opportunity to better exploit the multilevel polarization modulations.…”

Section: Introductionmentioning

confidence: 99%

Statistical Model and Performance Analysis of a Novel Multilevel Polarization Modulation in Local “Twisted” Fibers

2017

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Transmission demand continues to grow and higher capacity optical communication systems are required to economically meet this ever-increasing need for communication services. This article expands and deepens the study of a novel optical communication system for high-capacity Local Area Networks (LANs), based on twisted optical fibers. The complete statistical behavior of this system is shown, designed for more efficient use of the fiber single-channel capacity by adopting an unconventional multilevel polarization modulation (called "bands of polarization"). Starting from simulative results, a possible reference mathematical model is proposed. Finally, the system performance is analyzed in the presence of shot-noise (coherent detection) or thermal noise (direct detection).

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Circular-Birefringence Fiber for Nonlinear Optical Signal Processing

Cited by 66 publications

References 44 publications

Large amplitude noise reduction in ultrashort pulse trains using a power-symmetric nonlinear optical loop mirror

Large amplitude noise reduction in ultrashort pulse trains using a power-symmetric nonlinear optical loop mirror

Effect of control-beam polarization and power on optical time-domain demultiplexing in a new nonlinear optical loop mirror design

Statistical Model and Performance Analysis of a Novel Multilevel Polarization Modulation in Local “Twisted” Fibers

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