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A polarization analyzer is presented by polarization-mode-frequency mapping. The two orthogonal circularly polarized components of light are converted to two orbital angular momentum (OAM) modes by a q-plate, and then the OAM modes are mapping to two frequencies by using rotational Doppler Effect. The polarization of light can be retrieved by Fourier transform of the signal collected by a photodetector.
We experimentally demonstrate on-chip dual-channel all-optical AND logic operations based on four-wave mixing (FWM) for on-off keying (OOK) signals in a multimode silicon waveguide. A two-mode (de)multiplexing circuit consisting of tapered directional coupler-based (de)multiplexers and a multimode waveguide is designed and fabricated for this application. Experimental results show open eye-diagrams...
For the first time, we put forward an orbital angular momentum (OAM) divider based on coordinate transformation. The device can convert the OAM light into multiple diffracted light. The OAM of zeroth-order diffracted light is the product of the input OAM and the scaling parameter. We also extend the scheme to realize equal N-dividing of OAM. The ability of dividing OAM shows huge potential for OAM-based...
Recent research has revealed a significant ability to manipulate and control a light beam to hide events in time-domain. Achieving highly functional temporal cloaking, which open up and subsequently close intensity gaps in the probe beam to conceal events from the observer with satisfied performances, are still difficult in optical fiber communication. Here, we propose and experimentally demonstrate...
An on-chip polarization insensitive interconnection is proposed and fabricated based on SOI platform. The proposed circuit is experimentally demonstrated in fiber-optic communication system utilizing wavelength, polarization and mode multiplexing techniques with power penalty of 3.2dB.
By exploiting N-dimensional multiplexing, i.e. 54.139-Gbit/s OFDM-8QAM signals over 368 WDM pol-muxed 26 orbital angular momentum (OAM) modes, we experimentally demonstrate a free-space data link with an aggregate transmission capacity of 1.036 Pbit/s and a high spectral efficiency of 112.6 bit/s/Hz.
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