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We experimentally demonstrate the add/drop multiplexer for two orbital angular momentum (OAM) modes carrying 100-Gbit/s RZ-QPSK channels. An OSNR penalty of < 1.6 dB for added and dropped channels is observed.
We demonstrate all-optical sub-channel data erasing/updating based on cascaded sum-and difference-frequency generation in a single PPLN waveguide. OSNR penalty of 2-dB for RZ and 4-dB for NRZ at a BER of 2e-3 are achieved.
We experimentally demonstrate optical multiplexing of two 20-Gbit/s QPSK channels at different wavelengths onto a single 40-Gbit/s star 16-QAM channel with tunable ring ratio using cascaded fiber-based nonlinear stages. The impact of QPSK channel spacing is also investigated. BER measurements confirm the effectiveness of the proposed scheme.
We report phase-transparent DQPSK data exchange using parametric depletion in a highly nonlinear fiber. 100-Gbit/s DQPSK data exchange is demonstrated with a power penalty less than 5dB. Pump misalignment tolerance (+/-2ps) and input signal power dynamic range (~20dB) are investigated.
We demonstrate a scheme for reconfigurably selecting multiple tributaries of a 640-Gbit/s signal using cross-phase modulation in cascaded nonlinear optical loop mirrors (NOLMs). An average penalty of ~3.5 dB is introduced by each NOLM after arbitrarily selecting two 40-Gbit/s tributaries and subsequently redistributing them.
We report tributary channel data traffic grooming/exchange of pol-muxed DPSK signal based on Kerr-induced nonlinear polarization rotation. 8 tributary channel data grooming between two pol-muxed 80-Gbit/s DPSK channels is demonstrated with a penalty of <4 dB.
We experimentally demonstrate simultaneous two-channel wavelength conversion of 40-Gbit/s RZ-DPSK WDM signals using four-wave mixing (FWM) in a highly nonlinear fiber (HNLF) without additional pumps. A power penalty of <1 dB is observed as channel spacing varies from 200 GHz to 1 THz.
We demonstrate tributary channel data grooming of high-speed signals using second-order nonlinearities in a PPLN waveguide. 16 TDM tributary channel data traffic grooming/exchange between two 160-Gbit/s WDM signals is shown with a penalty of ~4 dB.
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