Linearly single polarization fibers with zero polarization mode dispersion

Okamoto, K.; Hosaka, T.; Sasaki, Yutaka

doi:10.1109/jqe.1982.1071590

Cited by 36 publications

(8 citation statements)

References 28 publications

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“…6 for various ellipticities. Our results agree closely with the accurate results [13] in the region of practical interest. The locations of zeros are of special interest for they specify the operating frequencies at which polarization-mode dispersion disappears.…”

Section: Per Unit Length Of Fiber) (26) N 1 a 2~supporting

confidence: 92%

“…3 for various ellipticities, where the point-matching analysis [ 131 is given for comparison and higher-order mode cutoff frequencies are marked with short vertical bars. 'The results obtained from the present method agree very well with those given in [13] except at very low frequencies where the scalar wave equations (4) and (6) are no longer accurate.…”

Section: The Effective-index Methodssupporting

confidence: 78%

“…l(b), respectively. The geometrical birefringence in a fiber B, can be expressed as [13] where u is given by (10) with m = 0 and r = (nl YE^)^.…”

Section: The Effective-index Methodsmentioning

confidence: 99%

“…The point-matching method E121 has also been used to calculate the birefringence in elliptical fibers [ 131. However, all the mentioned numerical methods [lo]- [13] involve a great deal of computation.…”

Section: Introductionmentioning

confidence: 99%

“…It can be shown that for step-index fibers of rectangular, elliptical, rhomboid, cusped shapes, and the like, the birefringence can be accurately determined by simply solving four one-dimensional wave equations. Therefore, the method is expected to he far more efficient than other numerical methods [lo]- [13] for this class of fiber. Additionally, the accuracy of the method used for the calculation of polarization-mode dispersion and waveguide-dispersion difference is investigated.…”

Section: Introductionmentioning

confidence: 99%

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Geometrical birefringence in a class of step-index fiber

Chiang

1987

J. Lightwave Technol.

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Based on a scalar wave equation including the geometrical effect, an effective-index method is developed for the calculation of geometrical birefringence, i.e., the difference in phase velocity between the two fundamental polarization modes, in a weakly guiding step-index fiber, of which the core can be of rectangular, elliptical, rhomboid or any other shape belonging to the same class, with arbitrary aspect ratio. Numerical results show that the method is very efficient and accurate in obtaining the birefringence and can also provide very useful information on the birefringence-induced dispersion in the fiber.

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Section: Per Unit Length Of Fiber) (26) N 1 a 2~supporting

confidence: 92%

Section: The Effective-index Methodssupporting

confidence: 78%

“…l(b), respectively. The geometrical birefringence in a fiber B, can be expressed as [13] where u is given by (10) with m = 0 and r = (nl YE^)^.…”

Section: The Effective-index Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Geometrical birefringence in a class of step-index fiber

Chiang

1987

J. Lightwave Technol.

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Numerical analysis of polarization‐maintaining single‐mode optical fibers with circular pits

Hosono

Hinata

Yoshikawa

1983

Electron. Comm. Jpn. Pt. I

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This paper proposes new structures for a polarization‐maintaining optical fiber with axially asymmetric index distribution: (1) a single circular‐pit fiber (SCF), (2) a double circular‐pit fiber (DCF), (3) a non‐coaxial W‐type fiber (NWF). Numerical analyses of their propagation characteristics are based on a new point‐matching method whose computation error is limited only by the mode number truncation error. It is shown that values of β/k0 as large as 3.0 × 10−4 can be obtained with air pits in the SCF and DCF structures.

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Analysis of polarization‐maintaining optical fibers with circular pits outside a circular core

Hinata

Yoshikawa

Kuroiwa

et al. 1986

Electron Comm Jpn Pt II

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This paper investigates the polarization‐maintaining optical fibers with one circular hollow pit (SCF) and two circular hollow pits (DCF) outside a circular core. The modal birefringence of the following fibers are investigated: with homogeneous core, with radially inhomogeneous core. The relation between the modal birefringence (ΔB) and the polarization dispersion (Δτ) is also investigated. The homogeneous core fibers are analyzed by the improved point‐matching method. To analyze the inhomogeneous core fibers, the core is divided into several homogeneous layers and the improved point‐matching method is then applied. The main conclusions drawn in this paper are as follows: (1) the maximum modal birefringence for DCF can be attained 3.5 times larger than that for SCF; (2) the modal birefringence for inhomogeneous core fiber cannot be greater than that for homogeneous core fiber, even if the core index is chosen equal to the maximum index value of inhomogeneous core; (3) zero polarization mode dispersion can be attained near the wavelength where the modal birefringence takes the maximum value; however, it is not zero at that very wavelength. The relative error of propagation constant computed by our method is less than 10−9 so that the relative errors of the modal birefringence and polarization mode dispersion are less than 10−4.

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Linearly single polarization fibers with zero polarization mode dispersion

Cited by 36 publications

References 28 publications

Geometrical birefringence in a class of step-index fiber

Geometrical birefringence in a class of step-index fiber

Numerical analysis of polarization‐maintaining single‐mode optical fibers with circular pits

Analysis of polarization‐maintaining optical fibers with circular pits outside a circular core

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