Generation of dark solitons in erbium-doped fiber lasers based Sb_2Te_3 saturable absorbers

Abstract

Dark solitons, which have better stability in the presence of noise, have potential applications in optical communication and ultrafast optics. In this paper, the dark soliton formation in erbium-doped fiber lasers based Sb(2)Te(3) saturable absorber (SA) is first experimentally demonstrated. The Sb(2)Te(3) SA is fabricated by using the pulsed laser deposition method. The generated dark solitons are centered at the wavelength of 1530 nm and repetition rate of 94 MHz. Analytic solutions for dark solitons are also obtained theoretically.

11-fs dark pulses generated via coherent absorption in plasmonic metamaterial

“…We also show that spectral width of the plasmonic absorption resonance that is linked to the plasmon relaxation time in gold does not allow generation of pulses shorter than 11fs using this type of absorbers. We argue that such pulse could enable the generation of short dark solitons which can propagate large distances in dispersive media without broadening [22] with high stability, low loss and low noise compared with bright solitons [16,23]. Dark pulses also can be used in spectroscopy enabling direct measurement of ultra-short excitation dynamics [4].…”

“…The generation of dark pulses of few hundreds of femtoseconds to nanoseconds duration has been demonstrated by various methods [3,[9][10][11][12][13]. These methods includes, spectral filtering by spatially patterned amplitude and phase masks [3], complex manipulation of regimes of ytterbium-doped fiber ring laser [14] and various other lasers with saturable absorbers based on carbon nanotubes [11], topological insulators [15], Antimony telluride films [16] and InGaAs:Be, Er doped multi-quantum wells [10]. The principal difference and advantage of our approach in comparison with previously developed laser sources of dark pulses is that, in principle it allows transferring arbitrary pattern of "bright" pulses into a pattern of "dark" pulses in another channel.…”

Analytic soliton solutions of cubic‐quintic Ginzburg‐Landau equation with variable nonlinearity and spectral filtering in fiber lasers

“…Researches on those different kinds of solitons can help to understand abundant physical laws involved in realistic applications. For instance, the conventional bright and dark solitons can be used in data transmission, readdressing as well as switching . Besides, exploding solutions in the cubic‐quintic CGLE can be experimentally observed in mode‐locked fiber lasers, which can guide the design of mode‐locked fiber lasers .…”

Picosecond all-optical switching and dark pulse generation in a fibre-optic network using a plasmonic metamaterial absorber

“…In contrast, all-optical processing of mutually coherent signals does not require optical nonlinearity [9]. Similarly, nonlinear dark pulse generation [10][11][12][13][14][15][16][17][18][19] and nonlinear dark soliton propagation [10,[20][21][22][23] in optical fibres at high intensities are well-known, but the shortest dark pulses have been generated by linear methods in free space [21,24]. Recent developments in dark pulse generation and coherent all-optical signal processing exploit the fact that modulation of light with light may be derived from the interaction of mutually coherent optical signals in a linear material of substantially subwavelength thickness [25].…”