Broadband long-period gratings

Optical waveguides – With optical coupler – Input/output coupler

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G02B 634

Patent

active

060849967

ABSTRACT:
This invention is predicated on applicants' discovery that one can design long-period gratings having a center wavelength versus A characteristic which changes polarity of slope near a wavelength of interest. Such a grating can be chirped to exhibit a wider bandwidth than chirped conventional gratings, e.g. 100 nm as compared to 20 nm. The new wide bandwidth gratings are highly useful in optical communications systems for dispersion compensation and for compensation of spectrally dependent optical amplifiers.

REFERENCES:
patent: 5757540 (1998-05-01), Judkins et al.
patent: 5953471 (1999-09-01), Espindola et al.

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