All-Optical Analog-to-Digital Conversion Based on Polarization-Differential Interference and Phase Modulation

All-optical Digital Processing Through Semiconductor Optical Amplifiers

“…The use of hybrid techniques employing an optical signal as sampling signal improves the performances. In (Li et al, 2005) polarization-differential interference and phase modulation is used. Optical sampling with amplitude modulators and time and wavelength-interleaved pulses is demonstrated in (Fok et al, 2004).…”

“…Optical sampling with amplitude modulators and time and wavelength-interleaved pulses is demonstrated in (Fok et al, 2004). In (Li et al, 2005 ;Fok et al, 2004 ) the quantizing and coding are exploited in the electronic domain. Besides the aforementioned hybrid techniques, all-optical ADC, i.e.…”

Integratable all-optical spectral quantization scheme based on chalcogenide–silicon slot waveguide

“…As the key process of AOADC, all-optical quantization techniques have attracted great attention, and lots of smart schemes have already been proposed, e.g. phase-shifted quantizations using electro-optic modulators and interference [5][6][7], multi-period transfer functions and spectral quantizations using optical nonlinear effects [8][9][10][11]. Compared with other schemes, the nonlinear effects-based schemes are competitive due to their ultra-fast response of femtosecond scale, passive operation, and large bandwidth [8][9][10][11].…”

Proposal for an all optical analog-to-digital converter based on modal birefringence in a polarization maintaining fiber

“…1 So far, many different schemes of all-optical ADC have been developed, in which the interferometric ADC has been widely used due to its simple structure and high speed, such as Taylor scheme, 2,3 nonlinear optical loop mirror (NOLM), 4,5 and phase shifted optical quantization (PSOQ). [6][7][8][9][10] The advantage of the PSOQ is its simple structure: only one phase modulator is needed. No requirement for the half-wave voltage of the modulator and no nonlinear effects are utilized, which makes the scheme more stable and reduced power consumption.…”