The Experts below are selected from a list of 128316 Experts worldwide ranked by ideXlab platform
K Kikuchi - One of the best experts on this subject based on the ideXlab platform.
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Suppression of Idler spectral broadening in highly efficient fiber four-wave mixing by binary-phase-shift-keying modulation of pump wave
IEEE Photonics Technology Letters, 2001Co-Authors: T. Tanemura, K KikuchiAbstract:Proposes and demonstrates a novel method of suppressing spectral broadening of the Idler wave, which is generated in fiber four-wave mixing (FWM) pumped by a continuous wave. In this scheme, binary-phase-shift-keying (BPSK) modulation of the pump wave broadens the pump spectrum so that the Brillouin threshold for the pump power is increased, whereas it never affects the spectrum of the Idler wave. By the 2-Gb/s BPSK modulation of the pump wave, we achieve a FWM efficiency as high as 10 dB, maintaining a side-band suppression ratio of the Idler wave larger than 25 dB.
R M Jopson - One of the best experts on this subject based on the ideXlab platform.
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generation of 1 024 tb s nyquist wdm phase conjugated twin vector waves by a polarization insensitive optical parametric amplifier for fiber nonlinearity tolerant transmission
Optics Express, 2014Co-Authors: Xiang Liu, R M Jopson, S Chandrasekhar, A H Gnauck, M Dinu, Chongjin Xie, Peter J WinzerAbstract:We experimentally demonstrate the generation of 1.024-Tb/s Nyquist-WDM phase-conjugated vector twin waves (PCTWs), consisting of eight 128-Gb/s polarization-division-multiplexed QPSK signals and their Idlers, by a broadband polarization-insensitive fiber optic parametric amplifier. This novel all-optical signal processing approach to generate WDM-PCTWs enables a 2-fold reduction in the needed optical transmitters as compared to the conventional approach where each Idler is generated by a dedicated transmitter. Digital coherent superposition of the twin waves at the receiver enables more than doubled reach in a dispersion-managed transmission link. We further study the impact of polarization-mode dispersion on the performance gain brought by the phase-conjugated twin waves, showing a gain of ~3.8 dB in signal quality factors.
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selective suppression of Idler spectral broadening in two pump parametric architectures
IEEE Photonics Technology Letters, 2003Co-Authors: S Radic, C J Mckinstrie, R M Jopson, J C Centanni, A R Chraplyvy, C G Jorgensen, K Brar, C HeadleyAbstract:We describe methods for selective suppression of Idler spectral broadening in two-pump fiber parametric fiber amplifiers. Combinations of multiple amplification bands and dissimilar pump modulation techniques are used to generate narrow Idlers at preselected wavelengths. In-phase pump modulation is shown to eliminate the need for phase-delay management in two-pump parametric amplification schemes.
Ady Arie - One of the best experts on this subject based on the ideXlab platform.
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Improved Idler beam quality via simultaneous parametric oscillation and signal-to-Idler conversion.
Optics letters, 2014Co-Authors: Shani Sharabi, Gil Porat, Ady ArieAbstract:We report on an improvement of Idler beam quality in a singly resonant optical parametric oscillator (OPO), where the resonant signal is converted to the Idler via an additional difference frequency generation (DFG) process. The two processes are phase matched simultaneously by a quasi-periodically poled nonlinear crystal. Whereas back-conversion of the signal and Idler to the pump frequency distorts the Idler beam in a standard OPO, in a quasi-periodic OPO the DFG process reduces the signal intensity, leading to suppression of back-conversion and, hence, improvement in Idler beam quality. Indeed, the experimental results show under the same pump power a significant improvement in Idler beam quality for the quasi-periodic OPO (1≤M2≤2.1) as compared with the standard OPO (3.2≤M2≤5.3).
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simultaneous parametric oscillation and signal to Idler conversion for efficient downconversion
Optics Letters, 2010Co-Authors: Gil Porat, Ofer Gayer, Ady ArieAbstract:We experimentally demonstrate an optical parametric oscillator, whose signal pumps another difference-frequency generation process. Engineered Idler frequency coincidence of both processes in a single quasiperiodic crystal improves pump-to-Idler slope efficiency by 52.8%, from 15.25% to 23.3%, and pump-to-Idler conversion efficiency (at an average pump power of 1.2 W) by 16.6%, from 12.5% to 14.58%.
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Efficient Nonlinear Idler Generation by Simultaneous Parametric Oscillation and Signal-to-Idler Conversion
Frontiers in Optics 2009 Laser Science XXV Fall 2009 OSA Optics & Photonics Technical Digest, 2009Co-Authors: Gil Porat, Ofer Gayer, Ady ArieAbstract:We experimentally demonstrate an optical parametric oscillator, whose signal pumps another difference frequency generation process. Engineered Idler frequency coincidence of both processes in a single quasiperiodic crystal improves pump-to-Idler conversion (slope) efficiency by 16.6% (52.8%).
T. Tanemura - One of the best experts on this subject based on the ideXlab platform.
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Suppression of Idler spectral broadening in highly efficient fiber four-wave mixing by binary-phase-shift-keying modulation of pump wave
IEEE Photonics Technology Letters, 2001Co-Authors: T. Tanemura, K KikuchiAbstract:Proposes and demonstrates a novel method of suppressing spectral broadening of the Idler wave, which is generated in fiber four-wave mixing (FWM) pumped by a continuous wave. In this scheme, binary-phase-shift-keying (BPSK) modulation of the pump wave broadens the pump spectrum so that the Brillouin threshold for the pump power is increased, whereas it never affects the spectrum of the Idler wave. By the 2-Gb/s BPSK modulation of the pump wave, we achieve a FWM efficiency as high as 10 dB, maintaining a side-band suppression ratio of the Idler wave larger than 25 dB.
Peter J Winzer - One of the best experts on this subject based on the ideXlab platform.
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generation of 1 024 tb s nyquist wdm phase conjugated twin vector waves by a polarization insensitive optical parametric amplifier for fiber nonlinearity tolerant transmission
Optics Express, 2014Co-Authors: Xiang Liu, R M Jopson, S Chandrasekhar, A H Gnauck, M Dinu, Chongjin Xie, Peter J WinzerAbstract:We experimentally demonstrate the generation of 1.024-Tb/s Nyquist-WDM phase-conjugated vector twin waves (PCTWs), consisting of eight 128-Gb/s polarization-division-multiplexed QPSK signals and their Idlers, by a broadband polarization-insensitive fiber optic parametric amplifier. This novel all-optical signal processing approach to generate WDM-PCTWs enables a 2-fold reduction in the needed optical transmitters as compared to the conventional approach where each Idler is generated by a dedicated transmitter. Digital coherent superposition of the twin waves at the receiver enables more than doubled reach in a dispersion-managed transmission link. We further study the impact of polarization-mode dispersion on the performance gain brought by the phase-conjugated twin waves, showing a gain of ~3.8 dB in signal quality factors.
