Soliton Self-Frequency Shift: Experimental Demonstrations and Applications

Abstract

Soliton self-frequency shift (SSFS), a consequence of Raman self-pumping that continuously redshifts a soliton pulse, has been widely studied recently for applications to fiber-based sources and signal processing. In this paper, the fundamentals of SSFS are reviewed. Various fiber platforms for SSFS (single-mode fiber, microstructured fiber, and higher order mode fiber) are presented and experimental SSFS demonstrations in these fibers are discussed. Observation of Cerenkov radiation in fibers exhibiting SSFS is also presented. A number of interesting applications of SSFS, such as wavelength-agile lasers, analog-to-digital conversion, and slow light, are briefly discussed.

High-power frequency comb source tunable from 27 to 42 μm based on difference frequency generation pumped by an Yb-doped fiber laser

“…It has been shown that pulses generated via SSFS are usually chirp-free, with nearly transform-limited duration [23]. Nevertheless, we verified the pulse shape and duration via interferometric autocorrelation using a standard Michelson interferometer with a 2-mm thick BBO crystal for second harmonic generation (SHG).…”

Comparative Performance Analysis of Soliton Pulse Generation Techniques

“…In the case of spatial soliton the natural property of light which is to disperse in space is being compensated by the nonlinearity of the medium in such a way that higher intensity part of an optical beam which is typically at the center of the employed Gaussian beam, increase a value of refractive index of medium forming de facto a core of waveguide that is responsible to confine in reverse a dispersed light to the middle of the beam itself [5]. It can be easily intuitively understood that if the self induced nonlinearity [2] is too high the beam will get focused and on the other hand if it is very small or none, beam will disperse in space -a prevailing situation in many cases where a beam does not have enough power density to induce nonlinearity in a medium.…”

Realization of soliton interaction in 100 Gbps, uncompensated single channel telecommunication system implemented with various telecom fibers

“…Unfortunately, solitons suffers various higher order effects like third order dispersion (Elgin et al 1995), intra pulse Raman scattering (Golles et al 1997) and self steepening (Lee 2008;Voronin and Zheltikov 2008;Trippenbach and Band 1998) which needs precise control on system design. The Third Order Dispersion (TOD, β 3 ) can be treated as perturbatively small at longer region from zero dispersion point, but becomes a matter of interest at or near zero dispersion point of the optical fiber.…”