This paper reviews recent work on the design, experimental implementation, and application
of two fundamental all-optical analog signal processing functionalities, namely, photonic …

Since the discovery of the Bragg's law in 1913, Bragg gratings have become important
optical devices and have been extensively used in various systems. In particular, the …

Photonics | Free Full-Text | Phase-Inserted Fiber Gratings and Their Applications to Optical
Filtering, Optical Signal Processing, and Optical Sensing: Review Next Article in Journal A …

Calculus is a fundamental subject in mathematics and extensively used in physics and
astronomy. Performing calculus operations by analog computing has received much recent …

We show that general-form optical cavities are able to perform the temporal differentiation of
optical signals. Analytical relationships to account for the scattering losses for such a cavity's …

We introduce a universal figure of merit to evaluate the processing speed (operation
bandwidth) performance of arbitrary-order optical differentiators. In particular, we define the …

We report the fabrication of a π-phase-shifted long-period fiber grating (LPFG) capable of
operating as a terahertz-bandwidth second-order temporal differentiator. We demonstrate its …

We demonstrate that an asymmetrical π phase-shifted fiber Bragg grating operated in
reflection can provide the required spectral response for implementing an all-optical …

It is generally known that the modal dispersions in helical long-period fibre grating (HLPG)
strongly affect the grating's spectrum. However, quantitatively evaluating the types of effects …

In this study, a novel and efficient method enabling fabrication of a multichannel helical long-
period fiber grating (HLPG) with almost the same channel spacing and the same rejection …