Dispersion-compensating fiber, dispersion compensator, and...

Details Dispersion-compensating fiber, dispersion compensator, and... Dispersion-compensating fiber, dispersion compensator, and...

2007-01-16

2007-01-16

Song, Sarah (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

Reexamination Certificate

active

11073725

ABSTRACT:
A dispersion-compensating fiber having a figure of merit of at least 200 ps
m/dB and an absolute value of relative dispersion curvature of at most 10−4nm−2both at a wavelength of 1550 nm, a dispersion compensator, and an optical transmission line are provided for large-capacity optical transmission. The dispersion-compensating fiber has a first core region with a refractive index of n1, a second core region surrounding the first core region with a n2(n1>n2), a third core region surrounding the second core region with a n3(n2<n3), and a 50 cladding region surrounding the third core region with a n4(n3>n4). With reference to n4,the first core region has a relative refractive-index difference of 2.0% to 3.3%, the second core region of −1.5% to −0.2%, and the third core region of 0.2% to 0.5%.

REFERENCES:
patent: 5878182 (1999-03-01), Peckham
patent: 6490398 (2002-12-01), Gruner-Nielsen et al.
patent: 6574407 (2003-06-01), Sillard et al.
patent: 6603914 (2003-08-01), Edvold et al.
patent: 2004/0146258 (2004-07-01), Yamamoto et al.

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