A novel all-optical design for implementing THz-bandwidth Hilbert transformers based on a uniform-period long-period grating (LPG) with a properly designed grating apodization profile is proposed and numerically demonstrated.
© 2012 OSA
(070.1170) Fourier optics and signal processing : Analog optical signal processing
(230.1150) Optical devices : All-optical devices
(070.7145) Fourier optics and signal processing : Ultrafast processing
R. Ashrafi and J. Azana, "Long period fiber grating designs for real-time ultra-fast Hilbert transformations," in Advanced Photonics Congress, OSA Technical Digest (online) (Optical Society of America, 2012), paper BW4E.4.