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Advanced photonics technology, particularly an optical frequency comb signal generation based on an optical modulation technique, is demonstrated to generate a terahertz-wave signal at a frequency of 1 THz. Frequency stability and phase noise characteristics are also evaluated for application to a wireless communication system.
We experimentally demonstrate an optical wavelength shifting scheme of 20Gbaud 16QAM based on cascaded 2nd-order nonlinearities in PPLN using coherent pumps, which is free of the phase noise from pumps.
We propose a pump-linewidth-tolerant wavelength conversion scheme with coherent two-tone pump, and demonstrate high quality wavelength conversion of 64QAM signals with <0.3-dB penalty at BER of 10−3 even using 3.5MHz-linewidth DFB pump source.
This letter presents a general model for the performance of spatial-division-multiplexing systems using self-homodyne detection. The model is applicable to single and dual polarization square -quadrature amplitude modulation (QAM) signals, assuming arbitrary signal and pilot tone optical signal-to-noise ratios. Its validity is demonstrated using a seven-core multicore fiber link with quadrature phase...
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