Design of a tunable, room temperature, continuous-wave terahertz source and detector using silicon waveguides

T Baehr-Jones, M Hochberg, R Soref, A Scherer - JOSA B, 2008 - opg.optica.org
We describe the design of a silicon-based source for radiation in the 0.5-14 THz regime.
This new class of devices will permit continuously tunable, milliwatt scale, cw, room …

Fringe-adjusted incoherent erasure joint transform correlator

MS Alam, J Khoury - Optical Engineering, 1998 - spiedigitallibrary.org
A new all-optical nonlinear fringe-adjusted joint transform correlation (JTC) technique is
proposed. The proposed scheme is based on incoherent-to-coherent conversion with the …

Photorefractive two-beam coupling joint transform correlator: modeling and performance evaluation

G Nehmetallah, J Khoury, M Alam, PP Banerjee - Applied Optics, 2016 - opg.optica.org
The photorefractive two-beam coupling joint transform correlator combines two features. The
first is embedded semi-adaptive optimality, which weighs the correlation against clutter and …

Nonlinear compansive noise reduction in joint transform correlators

J Khoury, G Asimellis, PD Gianino… - Optical …, 1998 - ui.adsabs.harvard.edu
Compansive diffraction nonlinearities reduce the noise and improve the performance of joint
transform correlators. The compression and expansion of the photorefractive two-beam …

Nonlinear dynamic range compression deconvolution

B Haji-Saeed, SK Sengupta, W Goodhue, J Khoury… - Optics letters, 2006 - opg.optica.org
We introduce a dynamic range image compression technique for nonlinear deconvolution;
the impulse response of the distortion function and the noisy distorted image are jointly …

Performance comparison of photorefractive two-beam coupling correlator with optimal filter based correlators

J Khoury, MS Alam, PP Banerjee… - Optical Pattern …, 2014 - spiedigitallibrary.org
The photorefractive joint transform correlator (JTC) combines two features. The first is
embedded semi-adaptive optimality which weighs the correlation against clutter and noise …

Engineering aspects of the two-beam coupling correlator

J Khoury, PD Gianino, CL Woods - Optical Engineering, 2000 - ui.adsabs.harvard.edu
We perform computer simulations and theoretical modeling to predict the location of the best
operating point of the two-beam coupling joint transform correlator. From this study, we …

Photorefractive joint transform correlator using incoherent erasure in two-and four-wave mixing geometries in a BaTiO3 crystal

R Tripathi, GS Pati, K Singh - Optical Engineering, 1998 - spiedigitallibrary.org
The outcomes of some experimental and simulation studies performed on an incoherent-
erasure photorefractive joint transform correlator (PR JTC) in the two-wave-and four-wave …

Characterization of optical correlation via dynamic range compression using organic photorefractive materials

J Khoury, JJ Donoghue, B Haji-saeed… - Optical Pattern …, 2012 - spiedigitallibrary.org
In prior work, we demonstrate optical correlation via dynamic range compression in two-
beam coupling using thin-film organic materials. In this paper, we continue the effort; …

Wiener-like correlation filters

J Khoury, PD Gianino, CL Woods - Applied Optics, 2000 - opg.optica.org
We introduce a new, to our knowledge, design for a Wiener-like correlation filter, which
consists of cascading a phase-only filter (POF) with a photorefractive Wiener-like filter. Its …