Abstract: This paper proposes and demonstrates an arbitrarily tunable multi-frequency pulse modulation scheme based on an active fiber loop, which effectively suppresses the interference fading effect ...
Spatial control of the phase and amplitude of a laser beam is useful for applications ranging from imaging and holography to interferometry and optical tweezers, reports Neil Savage. Digital spatial ...
Abstract: We present the first demonstration of an acoustic quadrature amplitude modulation (QAM) circuit based on polarization switching of ferroelectric thin films. Electric field control of ...
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