Chromatic dispersion compensating and chromatic dispersion...

Details Chromatic dispersion compensating and chromatic dispersion... Chromatic dispersion compensating and chromatic dispersion...

2006-06-07

2008-09-23

Bovernick, Rodney (Department: 2874)

Optical waveguides

Optical fiber waveguide with cladding

Utilizing multiple core or cladding

C385S127000

Reexamination Certificate

active

07428361

ABSTRACT:
A chromatic dispersion compensating and dispersion slope compensating optical fiber comprises a central core having an index difference Δn1with an outer optical cladding, a first buried inner cladding having an index difference Δn2with the outer cladding, a ring having an index difference Δn3with the outer cladding and a second buried inner cladding having an index difference Δn4with the outer cladding. The index difference between the first buried inner cladding and the outer cladding Δn2is less than or equal to −13.5.10−3and the index difference between the second buried inner cladding and the outer cladding Δn4is less than or equal to −3.10−3. The fiber has, for a wavelength of 1550 nm, a chromatic dispersion less than or equal to −50 ps
m/km and a ratio of the chromatic dispersion over the chromatic dispersion slope DOS less than or equal to 70 nm. The second deeply buried inner cladding allows obtaining a low DOS value whilst maintaining acceptable optical characteristics.

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