Ultranarrow bandwidth moiré reflecting Bragg gratings recorded in photo-thermo-refractive glass.
An experimental demonstration of a moiré reflecting Bragg grating in photo-thermo-refractive glass is carried out. This narrowband filter is obtained by the recording of two reflecting Bragg gratings with different periods. Filters with central wavelength at 1550 nm, bandwidth of 50 pm, and transmission higher than 95% are demonstrated. The methods to decrease bandwidth to 1 pm are finally investigated.
Smirnov
Vadim
V
OptiGrate Corporation, 3267 Progress Drive, Orlando, Florida 32826, USA.
Lumeau
Julien
J
Mokhov
Sergiy
S
Zeldovich
Boris Ya
BY
Glebov
Leonid B
LB