Abstract

The possibility of applying a method based on ray optics and modal relations to elliptical graded-index fibers is discussed, and the limits of validity are indicated. Two distinct classes of rays (whispering and bouncing) may be defined, along with a tunneling-radiating effect which both classes of rays may undergo. It turns out that, in the assumed reference system, the evaluation of the modal constants becomes less accurate when the index profile departs from a nearly step shape, especially for high ellipticities. However, when small ellipticities are considered (which correspond to practical cases), it is possible to evaluate the intermodal dispersion with sufficient accuracy.

© 1980 Optical Society of America

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  1. P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Whispering and bouncing modes in elliptical optical fibers," J. Opt. Soc. Am. 69, 1255–1259 (1979).
  2. A. Ankiewicz, "Ray Theory of Non Circular Optical Fibers," Opt. Quantum Electron. 11, 197–203 (1979).
  3. K. Peterman, "Uncertainties of the Leaky Mode Correction for Near-Square Law Optical Fibres," Electron. Lett. 13, 237–251 (1979).
  4. K. F. Barrel and C. Pask, "Geometric Optics Analysis of Non Circular Graded Index Fibres," Opt. Quantum Electron. 11, 237–251 (1979).
  5. The intermodal dispersion can be obtained at a given frequency V from the width of the envelope of the bounded modes included between the azimuthal orders ν = 1 and ν = νmax.6
  6. P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Effetto della dispersione del materiale in fibre ottiche con differenti distribuzioni di indice di rifrazione," Alta Freq. XLVII, 135–141 (1978).
  7. P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Tunneling-radiation effect in elliptical step index fibers," Opt. Lett. 4, 145 (1980).

1980 (1)

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Tunneling-radiation effect in elliptical step index fibers," Opt. Lett. 4, 145 (1980).

1979 (4)

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Whispering and bouncing modes in elliptical optical fibers," J. Opt. Soc. Am. 69, 1255–1259 (1979).

A. Ankiewicz, "Ray Theory of Non Circular Optical Fibers," Opt. Quantum Electron. 11, 197–203 (1979).

K. Peterman, "Uncertainties of the Leaky Mode Correction for Near-Square Law Optical Fibres," Electron. Lett. 13, 237–251 (1979).

K. F. Barrel and C. Pask, "Geometric Optics Analysis of Non Circular Graded Index Fibres," Opt. Quantum Electron. 11, 237–251 (1979).

1978 (1)

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Effetto della dispersione del materiale in fibre ottiche con differenti distribuzioni di indice di rifrazione," Alta Freq. XLVII, 135–141 (1978).

Ankiewicz, A.

A. Ankiewicz, "Ray Theory of Non Circular Optical Fibers," Opt. Quantum Electron. 11, 197–203 (1979).

Barrel, K. F.

K. F. Barrel and C. Pask, "Geometric Optics Analysis of Non Circular Graded Index Fibres," Opt. Quantum Electron. 11, 237–251 (1979).

Checcacci, P. F.

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Tunneling-radiation effect in elliptical step index fibers," Opt. Lett. 4, 145 (1980).

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Whispering and bouncing modes in elliptical optical fibers," J. Opt. Soc. Am. 69, 1255–1259 (1979).

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Effetto della dispersione del materiale in fibre ottiche con differenti distribuzioni di indice di rifrazione," Alta Freq. XLVII, 135–141 (1978).

Falciai, R.

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Tunneling-radiation effect in elliptical step index fibers," Opt. Lett. 4, 145 (1980).

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Whispering and bouncing modes in elliptical optical fibers," J. Opt. Soc. Am. 69, 1255–1259 (1979).

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Effetto della dispersione del materiale in fibre ottiche con differenti distribuzioni di indice di rifrazione," Alta Freq. XLVII, 135–141 (1978).

Pask, C.

K. F. Barrel and C. Pask, "Geometric Optics Analysis of Non Circular Graded Index Fibres," Opt. Quantum Electron. 11, 237–251 (1979).

Peterman, K.

K. Peterman, "Uncertainties of the Leaky Mode Correction for Near-Square Law Optical Fibres," Electron. Lett. 13, 237–251 (1979).

Scheggi, A. M.

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Tunneling-radiation effect in elliptical step index fibers," Opt. Lett. 4, 145 (1980).

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Whispering and bouncing modes in elliptical optical fibers," J. Opt. Soc. Am. 69, 1255–1259 (1979).

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Effetto della dispersione del materiale in fibre ottiche con differenti distribuzioni di indice di rifrazione," Alta Freq. XLVII, 135–141 (1978).

Alta Freq. (1)

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Effetto della dispersione del materiale in fibre ottiche con differenti distribuzioni di indice di rifrazione," Alta Freq. XLVII, 135–141 (1978).

Electron. Lett. (1)

K. Peterman, "Uncertainties of the Leaky Mode Correction for Near-Square Law Optical Fibres," Electron. Lett. 13, 237–251 (1979).

J. Opt. Soc. Am. (1)

Opt. Lett. (1)

P. F. Checcacci, R. Falciai, and A. M. Scheggi, "Tunneling-radiation effect in elliptical step index fibers," Opt. Lett. 4, 145 (1980).

Opt. Quantum Electron. (2)

A. Ankiewicz, "Ray Theory of Non Circular Optical Fibers," Opt. Quantum Electron. 11, 197–203 (1979).

K. F. Barrel and C. Pask, "Geometric Optics Analysis of Non Circular Graded Index Fibres," Opt. Quantum Electron. 11, 237–251 (1979).

Other (1)

The intermodal dispersion can be obtained at a given frequency V from the width of the envelope of the bounded modes included between the azimuthal orders ν = 1 and ν = νmax.6

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