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Control of coherent information via on chip photonic-phononic emitter-receivers | Heedeuk Shin
; Jonathan A. Cox
; Robert Jarecki
; Andrew Starbuck
; Zheng Wang
; Peter T. Rakich
; | Date: |
2 Sep 2014 | Abstract: | Rapid progress in silicon photonics has fostered numerous chip-scale sensing,
computing, and signal processing technologies. However, many crucial filtering
and signal delay operations are difficult to perform with all-optical devices.
Unlike photons propagating at luminal speeds, GHz-acoustic phonons with slow
velocity allow information to be stored, filtered, and delayed over
comparatively smaller length-scales with remarkable fidelity. Hence,
controllable and efficient coupling between coherent photons and phonons
enables new signal processing technologies that greatly enhance the performance
and potential impact of silicon photonics. Here, we demonstrate a novel
mechanism for coherent information processing based on traveling-wave
photon-phonon transduction, which achieves a phonon emit-and-receive process
between distinct nanophotonic waveguides. Using this device physics-which can
support 1-20GHz frequencies-we create wavelength-insensitive radio-frequency
photonic filters with an unrivaled combination of stopband attenuation,
selectivity, linewidth, and power-handling in silicon. More generally, this
emit-receive concept is the impetus for numerous powerful new signal processing
schemes. | Source: | arXiv, 1409.0580 | Services: | Forum | Review | PDF | Favorites |
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