Photon efficient wavefront sensing using an SLM for polarization-based weak measurements [PDF]
, 2012 A novel scheme is proposed for two dimensional direct measurement of wave functions using an SLM. This photon efficient method can be potentially useful for wavefront sensing of turbulence in adaptive optics systems used in free-space communication ...
Boyd, Robert W. +5 more
core +1 more source
Free space optical secret key agreement
Optics Express, 2018 Free space optical (FSO) communications are enabling high-speed global wireless networks. Thanks to the highly directional nature of laser beam, they also yield a greater security advantage over radio frequency counterparts. When combined with a scheme of secret key agreement (SKA), FSO-SKA can establish at high speed a symmetric secret key which ...
Hiroyuki, Endo +7 more
openaire +2 more sources
Twisted Light Transmission over 143 kilometers
, 2016 Spatial modes of light can potentially carry a vast amount of information, making them promising candidates for both classical and quantum communication. However, the distribution of such modes over large distances remains difficult.
Fickler, Robert +6 more
core +1 more source
Observation of nitrogen vacancy photoluminescence from an optically levitated nanodiamond
, 2013 We present the first evidence of nitrogen vacancy (NV) photoluminescence from a nanodiamond suspended in a free-space optical dipole trap at atmospheric pressure. The photoluminescence rates are shown to decrease with increasing trap laser power, but are
Gieseler, Jan +4 more
core +1 more source
Ray optical light trapping in silicon microwires: exceeding the 2n^2 intensity limit [PDF]
, 2011 We develop a ray optics model of a silicon wire array geometry in an attempt to understand the very strong absorption previously observed experimentally in these arrays.
Atwater, Harry A. +2 more
core +1 more source
Free space optics/millimeter-wave based vertical and horizontal terrestrial backhaul network for 5G
, 2020 The exponential increase of mobile users and high-speed data driven applications, along with the demand for IoT based services have resulted in a significant congestions in cellular backhaul network.
Suman Malik, P. Sahu
semanticscholar +1 more source
Nonparaxial accelerating Bessel-like beams [PDF]
, 2013 A new class of nonparaxial accelerating optical waves is introduced. These are beams with a Bessel-like profile that are capable of shifting laterally along fairly arbitrary trajectories as the wave propagates in free space.
Chremmos, Ioannis +1 more
core +3 more sources
Experimental investigation of the performance of different modulation techniques under controlled FSO turbulence channel [PDF]
, 2011 This paper experimentally investigates and compares the performance of the free space optics system employing three different modulation schemes, on-off keying (OOK) with nonreturn- to-zero (NRZ) and return-to-zero (RZ) and the binary phase shift keying (
Adebanjo, Olusegun +5 more
core +1 more source
Review on Free Space Optics [PDF]
INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY, 2013 Present era demands high bandwidth with high data rates especially for internet. For high data rates requires high speed transmission medium like optical fiber. To overcome the bottle neck of last mile communication free space optics has emerged as a better option for radio engineers.
Er. Rajeev Thakur +2 more
openaire +1 more source
Electrical 2{\pi} phase control of infrared light in a 350nm footprint using graphene plasmons
, 2017 Modulating the amplitude and phase of light is at the heart of many applications such as wavefront shaping, transformation optics, phased arrays, modulators and sensors.
Gao, Yuanda +10 more
core +1 more source