Wong group, Optical Nanostructures Laboratory, Columbia UniversityXiujian Li Phase Conjugation in Silicon waveguide.

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Presentation transcript:

Wong group, Optical Nanostructures Laboratory, Columbia UniversityXiujian Li Phase Conjugation in Silicon waveguide Xiujian Li Dec.22, 2011

Wong group, Optical Nanostructures Laboratory, Columbia UniversityXiujian Li 2 First proposed by Va. Zel'dovich and his colleagues in Moscow in 1972, with stimulated Brillouin scattering effect. Firstly, main applications in free space (spatial): The forward and the backward light have the same wavefront. 1. What’s phase conjugation

Wong group, Optical Nanostructures Laboratory, Columbia UniversityXiujian Li 3 1.Adaptive Optics; 2.Lensless Imaging; 3.Generating "Time-reversed" Light; 4.Phase-Conjugate Resonators; 5.Image processing; 6.Associative memory; 7.Frequency effect/ shift; 8.Time-Domain Applications (dispersion and nonlinear effect compensation). 2. Applications of phase conjugation

Wong group, Optical Nanostructures Laboratory, Columbia UniversityXiujian Li 4 3. Time- and Spectral-Phase conjugation

Wong group, Optical Nanostructures Laboratory, Columbia UniversityXiujian Li

Wong group, Optical Nanostructures Laboratory, Columbia UniversityXiujian Li 6 4. Phase conjugation and Four-Wave Mixing

Wong group, Optical Nanostructures Laboratory, Columbia UniversityXiujian Li 7 5. Implement Hu, H., et al.. Optics Letters, (17): p

Wong group, Optical Nanostructures Laboratory, Columbia UniversityXiujian Li 8 6. Next step 1.Design the parameters based on Silicon nano-waveguide; 2.Design the experimental setup based on current setup (for compression, SPM, and CPM); 3.Observe the frequency distribution via OSA; 4.Observe the phase distribution via FROG / X-FROG. 5.Associated with phase noise and timing jitter.

Wong group, Optical Nanostructures Laboratory, Columbia UniversityXiujian Li 9 7. Referenced setup