Optical waveguides – With optical coupler – Particular coupling function
Reexamination Certificate
2007-09-11
2007-09-11
Connelly-Cushwa, Michelle (Department: 2874)
Optical waveguides
With optical coupler
Particular coupling function
C385S008000, C385S015000
Reexamination Certificate
active
11001492
ABSTRACT:
Light pulses can be stopped and stored coherently, with an all-optical process that involves an adiabatic and reversible pulse bandwidth compression occurring entirely in the optical domain. Such a process overcomes the fundamental bandwidth-delay constraint in optics, and can generate arbitrarily small group velocities for light pulses with a given bandwidth, without the use of any coherent or resonant light-matter interactions. This is accomplished only by small refractive index modulations performed at moderate speeds and has applications ranging from quantum communications and computing to coherent all-optical memory devices. A complete time reversal and/or temporal/spectral compression and expansion operation on any electromagnetic field is accomplished using only small refractive index modulations and linear optical elements. This process does not require any nonlinear multi-photon processes such as four-wave mixing and thus can be implemented using on-chip tunable microcavity complexes in photonic crystals. The tuning process requires only small refractive index modulations, and moderate modulation speeds without requiring any high-speed electronic sampling.
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Fan Shanhui
Yanik Mehmet Fatih
Connelly-Cushwa Michelle
Davis , Wright, Tremaine, LLP
Peace Rhonda S.
The Board of Trustees of the Leland Stanford Junior University
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