Preservation of polarisation in optical-fibre waveguides with elliptical cores

Dyott, R.B.; Cozens, J.R.; Morris, D.

doi:10.1049/el:19790275

Cited by 184 publications

(56 citation statements)

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“…It has been shown that large birefringence can be achieved by asymmetric waveguide geometry such as an elliptical core (e-core) [6,7]. The birefringence of such e-core fibers was shown to grow in proportional to 2 n ∆ , where n ∆ is the refractive index difference between the core and the cladding [7,23].…”

Section: Hi-bi Microfibers: Theoretical Analysismentioning

confidence: 99%

“…The birefringence of such e-core fibers was shown to grow in proportional to 2 n ∆ , where n ∆ is the refractive index difference between the core and the cladding [7,23]. For a traditional e-core fiber comprising a Ge-doped core and silica cladding, the core-cladding index difference n ∆ is typically less than 0.04.…”

Section: Hi-bi Microfibers: Theoretical Analysismentioning

confidence: 99%

“…Hi-Bi fibers can be produced by introducing stress applying parts around the fiber core, examples of this type of Hi-Bi fibers are the commercial PANDA [4] and Bow-Tie fibers [5]. Alternatively, Hi-Bi operation can be achieved by asymmetric waveguide geometry with elliptical core fibers as a typical representative of this type [6,7]. Recently, micro/nanofiber photonic devices have attracted significant interest.…”

Section: Introductionmentioning

confidence: 99%

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Highly birefringent optical microfibers

Xuan¹,

Ju²,

Jin³

2010

Opt. Express

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Abstract:Highly birefringent (Hi-Bi) air-clad silica microfibers (MFs) with wavelength and sub-wavelength scale transverse dimensions are studied theoretically and experimentally. Hi-Bi MFs are taper-drawn from the standard SMF-28 single mode fibers that are "pre-processed" by "cutting away" parts of the silica cladding on opposite sides of the fiber with a femtosecond infrared laser. Such Hi-Bi MFs have approximately elliptical cross-sections and are approximated by a three-layer model comprising a small central Ge-doped region surrounded by an elliptical silica region and an air-cladding. Theoretical modeling shows that phase and group birefringence of the order 10 −2 can be achieved with such air-clad Hi-Bi MFs. Experiments with an air-clad elliptical fiber with a major diameter of 0.9µm and a minor/major diameter ratio of 0.9 demonstrated a group birefringence of ~ 0.015, agreeing well with the theoretical predictions. The Hi-Bi MFs are useful for micron/nanoscale polarization maintaining transmission and phase-sensitive interferometric sensors. Express 12(9), 1916-1923 (2004). 24. R. B. Dyott, Elliptical fiber waveguides (Artech House, boston.london, 1995). 25. C. Yeh, "Elliptical dielectric waveguides," J. Appl. Phys. 33(11), 3235-3243 (1962 2359-2371 (1995). 27. S. C. Rashleigh, "Measurement of fiber birefringence by wavelength scanning: effect of dispersion," Opt. Lett. ©2010 Optical Society of America

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Section: Hi-bi Microfibers: Theoretical Analysismentioning

confidence: 99%

Section: Hi-bi Microfibers: Theoretical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Highly birefringent optical microfibers

Xuan¹,

Ju²,

Jin³

2010

Opt. Express

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“…(14) and (15) with Qx = qia, and Qy = qibl, we may obtain the spot size equations in the elliptical coordinates, (19) where Io(x)and Ij(x) are modified Bessel functions of the first kind and of orders 0 and 1, respectively, and W2Q2 sinh 2 …”

Section: -mentioning

confidence: 99%

“…To produce high birefringence, both the core ellipticity and the index difference have to be large, resulting in the core size being very small for a single-mode fiber. 2 This does not only make fabrication and connection more difficult, but it also enhances the nonlinear effects in the core.…”

Section: Introductionmentioning

confidence: 99%

Polarization characteristics of double-clad elliptical fibers

Zhang

Lit

1990

Appl. Opt.

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A scalar variational analysis based on a Gaussian approximation of the fundamental mode of a double-clad elliptical fiber with a depressed inner cladding is studied. The polarization properties and graphic results are presented; they are given in terms of three parameters: the ratio of the major axis to the minor axis of the core, the ratio of the inner cladding major axis to the core major axis, and the difference between the core index and the inner cladding index. The variations of both the spot size and the field intensity with core ellipticity are examined. It is shown that high birefringence and dispersion-free orthogonal polarization modes can be obtained within the single-mode region and that the field intensity distribution may be more confined to the fiber center than in a single-clad elliptical fiber.

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Modal cutoff conditions for a waveguide having an annular guiding region with a parabolically graded refractive-index profile

Ganguly

Singh

Pandey

et al. 1999

Microw. Opt. Technol. Lett.

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An annular dielectric waveguide having a truncated parabolically graded refractive‐index profile in the guiding region has been analytically studied for cutoff conditions. The thickness effect of the annular guiding region on the cutoff values of the z‐component of the propagation constant for some lower order modes has been studied for some special cases. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 22: 167–171, 1999.

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Preservation of polarisation in optical-fibre waveguides with elliptical cores

Cited by 184 publications

References 0 publications

Highly birefringent optical microfibers

Highly birefringent optical microfibers

Polarization characteristics of double-clad elliptical fibers

Modal cutoff conditions for a waveguide having an annular guiding region with a parabolically graded refractive-index profile

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