Four-Wave-Mixing-Based Dual-Wavelength Conversion in a Semiconductor Optical Amplifier

Abstract

Abstract-The simultaneous wavelength conversion of two different formats or bit-rate optical signals, with low input power, is demonstrated in a highly nonlinear semiconductor optical amplifier with a single strong continuous-wave pump. For two amplitude-modulated signals of different bit rates, moderate penalties are obtained, and for the case of mixed amplitude and phase modulation at 10 Gb/s, practically penalty-free operation is achieved. In all cases, small difference ( 1.1 dB) between single-and dualchannel operation is obtained, allowing asynchronous operation.

Multichannel transmission of intensity- and phase-modulated signals by optical phase conjugation using a quantum-dot semiconductor optical amplifier

“…4(a). On the other hand, previous work with dual-wavelength conversion using a common SOA required a much smaller injected power (−17 dBm) of the intensity-modulated signal to mitigate the XGM effect at the same operating bit rate and channel spacing [12]. This comparison shows that the XGM effect in the FWM induced by the QD-SOA is smaller than that induced by common SOAs.…”

Dual-Channel Simultaneous Wavelength Conversion With OSSB Modulator and AWG

“…The development of wavelength-division multiplexing (WDM) optical networks is required to satisfy this demand. Wavelength conversion is an invaluable technique for efficient use of wavelength resources in WDM optical networks and there are many methods for wavelength conversion, such as O/E/O conversion, the nonlinear response of optical semiconductor amplifiers [1], [2], and that of optical fibers [3]. Optical single-sideband (OSSB) modulators offer several advantages for use in WDM, such as independence of the signal format and the ability to achieve the appropriate amount of wavelength conversion without increasing the phase noise [4], [5].…”

Experimental demonstration of all optical 100 Gbit/s wavelength conversion with 1-to-2 wavelength multicasting based on cross-phase modulation in dispersion flattened highly nonlinear photonic crystal fiber

“…This includes using double-stage cross-gain modulation (XGM), 2 nonlinear polarization rotation 3 or four-wave-mixing (FWM) 4 in semiconductor optical amplifier (SOA); using cross absorption modulation 5 or FWM 6 in electroabsorption modulator (EAM); using FWM in dispersion shift fiber (DSF), 7 highly nonlinear fiber 8 or bismuth oxide fiber 9 ; using cross-phase modulation (XPM) 10 or FWM 11 in silicon nanowire; using cascaded second-harmonic generation and difference-frequency generation (cSHG/DFG) in a periodically poled lithium niobate (PPLN) waveguide 12 ; using free carrier dispersion effect in microring resonator 13 ; using self seeding in optical parametric amplifier, 14 in injection-locked laser diode 15 or double-ring fiber Laser. 16 However, most of the schemes suffer from drawbacks such as limited speed due to long carrier lifetime or pulse walk-off, complex architecture, a fairly high optical input power requirement, low conversion efficiency, high manufacturing cost, polarization sensitive, and so on.…”