We experimentally demonstrate the nonlinear generation of frequency-dissymmetric sidebands by injecting picosecond pump pulses inside the fundamental mode of a silica-core photonic crystal fiber in its normal dispersion regime. A systematic analysis highlights the fact that this phenomenon is based on the combination of the two major nonlinear effects occurring inside the fiber: self-phase modu...

Low-density parity-check (LDPC) coded orthogonal-frequency-division multiplexing (OFDM) is studied as an efficient coded modulation technique suitable for fiber-optics communication systems. We show that in long-haul fiber optics communications LDPC-coded OFDM increases spectral efficiency and requires simple equalization to deal with chromatic dispersion. LDPC-coded OFDM is also a promising po...

Optical wavefront interferometry has evolved into increasingly compact and portable forms with optimizations and novel developments from multi-component, bulk-optic configurations to miniaturized multi-core fiber forms; each presents its own advantages, challenges and opportunities. OCIS codes: 030.0030 Coherence; 070.0070 Fourier optics and signal processing; 120.0120 Instrumentation, measurem...

This paper reviews key challenges in designing a transport network for 5G systems. Then it outlines how optics can contribute in solving some of them and which features the optical transport network shall be provided with. OCIS codes: (060.4256) Networks, network optimization; (060.2330) Fiber optics communications

We numerically study the dynamics of ultra-broadband wavelength converters based on fourth-order scalar modulation instability. We report the spontaneous emergence of solitons and trapped radiation waves as well as L-shaped associated statistical signatures. OCIS codes: (060.4370) Nonlinear optics, fibers; (060.2320) Fiber optics amplifiers. (060.5530) Temporal solitons

Complementing wireless radio networks with free-space optics (FSO) achieve high data rates by modulating radio subcarriers over an optical carrier without expensive optical fiber cabling, enabling a pervasive platform for reaching underserved areas. In this paper, we review the main features of Free Space Optical Communication. Keywords— Free space Optics, NRZ, RZ, PIN, APD etc.

I introduce a new field: electro-photonics, where the best of the electronic and photonic technologies are combined to increase the capacity, flexibility and energy efficiency of communications systems. OCIS codes: (060.0060) Fiber optics and optical communications; (070.2025) Discrete optical signal processing; (130.0250) Optoelectronics; (130.3120) Integrated optics devices; (130.4110) Modula...

A fundamental limitation in high-resolution and long-range Brillouin optical timedomain systems is overcome in this paper, enabling 500k resolved points over 25 km of SMF with 5 cm spatial resolution in a usual acquisition time. OCIS codes: (060.2370) Fiber optics sensors; (290.5900) Scattering, stimulated Brillouin; (060.4370) Nonlinear optics, fibers.

We analyze the modulation instability spectrum in a varying dispersion optical fiber as a function of the dispersion oscillation amplitude, and predict a novel sideband splitting into different sub-sidebands for relatively large dispersion oscillations. OCIS codes: (060.4370) Nonlinear optics, fibers; (190.4380) Nonlinear optics, four-wave mixing;