Signal-to-Idler Conversion Penalty in AlGaAs-on-Insulator Wavelength Converter

Abstract

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Optical Phase Conjugation in a Silicon Waveguide With Lateral p-i-n Diode for Nonlinearity Compensation

“…This can be considered a potential worst case scenario in terms of signal degradation. As the conversion will occur in the middle of the transmission link, the signal will have suffered OSNR degradation throughout the transmission and therefore the penalty is expected to be lower than the 0.5 dB measured with a clean signal at the transmitter output [34].…”

Characterization and Optimization of Four-Wave-Mixing Wavelength Conversion System

“…In this paper, we extend our previous characterization of [25], where increasing conversion penalty was demonstrated for high OSNR inputs, to a thorough experimental and numerical analysis of a χ (3) wavelength converter. Instead of only characterizing the nonlinear medium, we focus on the complete system and study the origins of impairments associated with the entire conversion process.…”

“…WDM signals on a 25-GHz grid are generated by external cavity lasers (ECLs), with 16-QAM data at rate 16-GBd modulated onto the corresponding waves with external IQ modulators (one for even and one for odd channels). The channels are then coupled together, amplified with an EDFA, and launched into a wavelength converter based on degenerated FWM in AlGaAsOI [6], [25]. The OSNR evolution is tracked and measured throughout the system by means of the recorded spectra as indicated: OSNR in in Fig.…”

Unrepeatered Transmission Reach Extension by Receiver-Side all-Optical Back-Propagation

“…19.5 dBm, i.e. 5 than in the LEAF. In the linear region, where the signal is greatly dominated by ASE noise after transmission, the OBP module introduces negligible degradation, as shown in Fig.…”

“…A few experimental demonstrations have been reported for dispersion-managed links, but only focusing on optical pre-compensators at the transmitter side [4]. As the penalty associated with implementing OPC is higher for a high quality signal, as shown in [5], in this work we demonstrate significant gains by performing receiver-side compensation.…”