Experimental demonstration of an ultrafast all‐optical bit‐error indicating scheme

Abstract

International audienceWe experimentally demonstrate an all-optical bit error monitoring scheme based on the self-phase modulation occurring during the propagation in a highly nonlinear fiber followed by an optical bandpass filter. Numerical simulations are confirmed by experimental observations performed at a repetition rate of 40 Gb/s

Simple guidelines to predict self-phase modulation patterns

“…4(b)]. This can be of interest for nonlinear signal processing applications based on optical band-pass filtering at the central frequency [14,15].…”

“…SPM is often regarded as being harmful for optical communication systems or high-power pulse generation [7]. However, when conveniently managed, SPM can be a precious ingredient that has stimulated a tremendous amount of applications, including the generation of ultra-short pulses [8,9], the compensation of dispersion through solitonic effects [4,10], the generation of wavelengthmultiplexed sources [11], the frequency shifting of ultra-short pulse sources [12], the contrast enhancement of ultra-short pulses [13], several applications in ultrafast optical signal processing [14,15], and the characterization of optical pulses [16,17] and waveguides [18].…”

All-optical measurement of residual chromatic dispersion and OSNR using self-phase modulation in optical fiber

“…At the opposite of classical applications that usually target an all-optical ultrafast power-limiter and where a plateau zone is suitable [9,10], we voluntarily implement here a strong rise and fall evolution. Indeed, such a TF characteristic enables an enhanced sensitivity towards the initial pulse stream fluctuations and has recently been experimentally exploited in the context of an ultrafast all-optical amplitude jitter magnifier [11] and in a bit error monitoring scheme [12].…”

Impact of amplitude jitter and signal-to-noise ratio on the nonlinear spectral compression in optical fibres

“…The x-intercept PC of the tangent to the TF curve at the working power Pin = 1.2 W satisfies the condition 0 < PC < 2 Pin [30], therefore the proposed device acts as an all-optical amplitude jitter magnifier at this power. It is also noteworthy that for an input working power of 3.2 W, the system exhibits the optical functionality of a bit-error indicating scheme [31,32]. In order to assess the regeneration capability of the device, we tested its operation with a RZ amplitude-shift keying pulse train modeled by a pseudorandom binary sequence of length 4096 bits.…”