Based on time-space duality, we deduce a time-domain equivalent to the Fraunhofer (far-
field) approximation in the problem of spatial diffraction. We can use this equivalence to …

This paper reviews the state of the art of fiber Bragg gratings (FBGs) as analog all-optical
signal processing units. Besides the intrinsic advantages of FBGs, such as relatively low …

Although several books cover the coding theory of wireless communications and the
hardware technologies and coding techniques of optical CDMA, no book has been …

A new family of two-dimensional (2-D) wavelength-hopping time-spreading codes, which
employs wavelength hopping algebraically under prime-sequence permutations on top of …

An optical spectral coding scheme is proposed for fiber-optic code-division multiple access
(FO-CDMA) communications. The spectral coding is based on the pseudo-orthogonality of …

Time-domain optical processing implemented through linear spectral filtering offers unique
potential for future high-bandwidth communications systems. One key to realization of this …

A fiber Bragg grating (FBG) encoder/decoder scheme based on correlation subtractions of
nearly orthogonal M-sequence codes is presented. With proper coder design, a receiver can …

The Encyclopedia of Image Processing presents a vast collection of well-written articles
covering image processing fundamentals (eg color theory, fuzzy sets, cryptography) and …

We demonstrate the first all-optical optical code-division multiple-access (OCDMA)
encryption and decryption system with variable two-code keying. The nonlinear optical loop …

In this paper, multiple access techniques for bipolar optical code division are proposed for
application in wireless optical communications. First, several fiber Bragg gratings (FBGs) …