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The paper discusses design and investigation of a new approach to chirp generation for the aim of frequency deviation increasing. The structure of device that implements chirp generation based on self-phase modulation in optical fibers is given. Self-phase modulation is an effect of nonlinear optics that causes spectrum broadening of a high-power light impulse during its propagation over the optical...
We propose a new optoelectronic oscillator (OEO) architecture, able to generate at the same time ultra-low jitter optical pulses and ultra-low phase noise microwaves. This new system relies on the single-loop OEO, with two modulation branches: an intensity modulation for the formation of sinusoidal pre-pulses, and a phase modulation to chirp them. The train of chirped pre-pulses is then strongly amplified...
The concept of spectral compression - temporal lensing by self-, cross- and inter-phase modulation versions, and its applications to signal control and characterization in ultrafast optics with relevant experiments are presented. A special issue of discussion is the studies aimed at designing a femtosecond optical oscilloscope/decoder of sub-PHz service band.
We demonstrate the optical compensation of self-phase modulation in fiber by using the VCSEL-based nonlinear phase shifter. The transient phase shift of 25psec pulses induced by self-phase modulation in fiber could be optically compensated.
We present the manipulation of optical phase using a VCSEL-based nonlinear phase shifter and a Bragg reflector slow light waveguide. We demonstrate the optical compensation of self-phase modulation in fiber by using the VCSEL-based nonlinear phase shifter. The transient phase shift of 25 psec pulses induced by self-phase modulation in fiber could be optically compensated.
To cope with a large intensity fluctuation of optical signals in optical networks, we expand the dynamic range of our proposed all-optical intensity equalizer by using effective self-phase modulation with pre-chirped signals. We have numerically confirmed a remarkable effect of proposed SPM alleviation method by pre-chirped signals for achieving a large dynamic range beyond those of the conventional...
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