Optical fiber having a lower bending loss

Details Optical fiber having a lower bending loss Optical fiber having a lower bending loss

2005-05-31

2005-05-31

Font, Frank G. (Department: 2883)

Optical waveguides

Optical fiber waveguide with cladding

With graded index core or cladding

C385S122000, C385S123000, C385S125000, C385S126000, C385S114000

Reexamination Certificate

active

06901196

ABSTRACT:
An optical fiber includes a first core having a relative refractive index difference of larger than 0.36%, and a cladding. The optical fiber has fiber cut-off wavelength λc of more than 1350 nm, cable cut-off wavelength λcc of less than 1285 nm, bending loss at a wavelength of 1625 nm of not more than 10 dB/km when wound at a diameter of 20 mm, transmission loss at a wavelength range of 1285 to 1625 nm of not more than 0.40 dB/km, transmission loss at a wavelength of 1383 nm less than transmission loss at a wavelength of 1310 nm, and difference in transmission loss at a wavelength of 1383 nm of not more than 0.04 dB/km before and after exposure to hydrogen. The lower bending loss of the optical fiber provides an optical fiber cable for use in a WDM transmission in wavelength range of 1285 to 1625 nm.

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A. Rossaro, P. Regio, T. Tambosso, Non-zero dispersion fibres: markets and standards, EXP, vol. 2, Mar. 2002.

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