All-optical parallel-to-serial conversion by holographic spatial-to-temporal frequency encoding

Sun, Pang-Chen; Mazurenko, Yu. T.; Chang, William S. C.; Yu, Paul K. L.; Fainman, Yeshaiahu

doi:10.1364/ol.20.001728

Cited by 84 publications

(40 citation statements)

References 7 publications

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“…40 ' 41 It was also shown that metamaterial approach can help to overcome fabrication difficulties and create a Fresnel lens analogue using binary lithographic fabrication with deep subwavelength feature sizes of less than 60 nm. 9 It is also possible to mold the light flow in the planar configuration by using metamaterials.…”

Section: Dielectric Metamaterialsmentioning

confidence: 99%

“…Such waveforms vary too rapidly for even the fastest photodetectors to resolve, leading to the need to develop optical information processing methods. Time-domain and spectraldomain processors utilized linear 9 and nonlinear 10 processes, and found useful applications for ultrafast waveform synthesis, detection and processing. 10 " 12 It is evident that optical processing in space and time has so far failed to move out of the lab.…”

Section: Introductionmentioning

confidence: 99%

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Nanophotonics for Information Systems

Luryi

Zaslavsky

2010

Future Trends in Microelectronics

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Optics has the potential to solve some of the most exing problems in computing hardware. It promises crosstalk-free interconnects with essentially unlimited bandwidth, long-distance data transmission without skew and without power-and time-consuming regeneration, miniaturization, parallelism, and efficient implementation of important algorithms such as Fourier transforms. Yet, optical computing and processing in space and time has so far failed to move out of the lab. The free-space and guided-wave devices are costly, bulky, and fragile in their alignment. They are also difficult to integrate with electronic systems, both in terms of the fabrication process and in terms of delivery and retrieval of the massive volumes of data the optical elements can process. Moreover, there exist applications that rely on our ability in interfacing optical devices and systems with other signal modalities such as for example biological and biochemical processes. These applications led us recently to establishing a new research area that we call optofluidics, where fluids are used to create adaptive optical elements, control them, and establish efficient interfaces with biochemical systems.Things may be changing, however. More recent work emphasizes the construction of optical subsystems directly on-chip, with the same lithographic tools as the surrounding electronics. This has been made possible by the advances in these tools, which can now create features significantly smaller than the optical wavelength; experts predict lithographic resolution as fine as 16 nm by year 2020. Arranged in a regular pattern, subwavelength features act as a metamaterial whose optical properties are controlled by the density and geometry of the pattern and its constituents. Lenses, polarizers, chromatic dispersers, diffraction gratings, and other optical processing devices can now be implemented on-chip using metamaterials wherever natural materials with similar properties either do not exist, or (more frequently) would not be compatible with lithographic fabrication.To advance this technology, investigations of nanostructures and their interaction with electromagnetic field are critical. Engineers also need appropriate modeling and design tools, new fabrication recipes, and test instruments capable of characterizing on-chip components. The design of integrated photonic systems is a challenging task as it not only involves the accurate solution of electromagnetic equations, but also the need to incorporate the material and quantum physics equations to enable the investigation and analysis of near field interactions. These studies need to be integrated with device fabrication and characterization to verify device concepts and optimize device designs. In this talk, we discuss some of the CMOS-compatible SOI metamaterials and devices recently demonstrated. These include graded-index lenses, birefringent elements that utilize a combination of geometry and material properties to separate light into orthogonal polarizations, frequency-selective resonators ...

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Section: Dielectric Metamaterialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanophotonics for Information Systems

Luryi

Zaslavsky

2010

Future Trends in Microelectronics

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“…1. 17 Since the temporal input information is 1D, it is converted into 1D spatial information. In the second spatial axis an imaging procedure is performed.…”

Section: B Analysis Of a Temporal-spatial Processor By Use Of The Tswdfmentioning

confidence: 99%

Wigner-related phase spaces for signal processing and their optical implementation

2000

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Phase spaces are different ways to represent signals. Owing to their properties, they are often used for signal compression and recognition with high discrimination abilities. We present several recently introduced Wigner-related sets of representations that have improved signal processing performance, and we introduce an optical implementation. This study deals with the generalized Wigner spaces, the fractional Fourier transform, and the x -p and the r -p representations. The optical implementations are demonstrated and discussed.

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“…In other words, we assume that the volume hologram defines the aperture of the system. Under this condition, we can substitute (9) into (10) and perform the integrations right away, obtaining circ rect (11) where the coefficients are given by (12) (13) (14) (15) To simplify the integral (11), we use the following cylindrical coordinates: (16) with the inverse transformations given by (17) where the sign of the inverse tangent is taken to conform with the quadrant of and respectively. Equation (11) then becomes (18) The result for the innermost integral is well known, expressed in terms of the zero-order Bessel function of the first kind as (19) The next-level integral occurs in the calculation of the 3-D PSF of a lens near focus, and is written as (20) where the real and imaginary parts of the function are expressed in terms of the Lommel functions.…”

Section: A Reflection Hologramsmentioning

confidence: 99%