Tunable all-optical negative multitap microwave filters based on uniform fiber Bragg gratings.
We present a novel and simple technique for obtaining transversal filters with negative coefficients by using uniform fiber Bragg gratings. We demonstrate a wide tuning range, good performance, low cost, and easy implementation of multitap filters in an all-optical passive configuration in which negative taps are obtained by use of the transmission of a broadband source through uniform Bragg gratings.
Mora
J
J
Instituto de Ciencia de los Materials, Universidad de Valencia, Dr. Moliner 50, 46100 Burjassort, Valencia, Spain.
Andrés
M V
MV
Cruz
J L
JL
Ortega
B
B
Capmany
J
J
Pastor
D
D
Sales
S
S