Optical waveguides – With optical coupler – Input/output coupler
Patent
1998-04-01
2000-07-04
Ngo, Hung N.
Optical waveguides
With optical coupler
Input/output coupler
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.
Judkins Justin Boyd
Vengsarkar Ashish Madhukar
Wagener Jefferson Lynn
Lucent Technologies - Inc.
Ngo Hung N.
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