Results 241 to 250 of about 124,016 (297)

Diffusion-Assisted Optical Switch: A New Optical Logic Device

Photonic Switching, 1989
Theoretical and experimental results from a new optical logic device are presented which indicate that it has speeds of many GHz, sub 100 femtojoule energies, and is easily fabricatable.
Theodore Sizer, Gabriela Livescu, Jack Cunningham, David A. B. Miller   +3 more
openaire   +1 more source

Optical Bistable Devices for Memory and Logic

Physica Scripta, 1989
Nonlinear interference filters and liquid crystal cells for low power optical bistability are reviewed. The use of filters for prototype optical circuitry and a proposed cellular-logic-image-processing architecture are ...
B S Wherrett, Y T Chow, A K Rhoomy-Darzi, A D Lloyd   +3 more
openaire   +1 more source

Optical Logic Devices

1993
Free-space digital optics relies on optical devices which may be required to play the same role as a transistor in digital electronics. In addition to being an optical port, i.e., a modulator or emitter and a detector, they may also be required to act as a thresholding device. Such devices are called optically bistable (OB).
H. Scott Hinton, J. R. Erickson, T. J. Cloonan, F. A. P. Tooley, F. B. McCormick, A. L. Lentine   +5 more
openaire   +1 more source

Conservative Optical Logic Devices: COLD

2006
Publisher Summary Conservative optical logic devices (COLD) aim at satisfying needs in niche markets. Where it is applicable, it has uniquely wonderful properties. This chapter describes COLD. Many integrated optical devices on silicon substrates have been developed and many more are being developed that combine small optical components on the same ...
H. John Caulfield, Lei Qian, Chandra S. Vikram, Andrey Zavalin, K. Chouffani, James Hardy, W.J. McCurdy, Jonathan Westphal   +7 more
openaire   +1 more source

Optical Parallel Logic Device Using Liquid Crystal

SPIE Proceedings, 1989
ABSTRACT Optical parallel logic device using twisted nematic liquid crystal cells doped with dichroic dyes and dichroic filters are proposed. Operation of this device is expressed by combination of transfer functions of simple 2X2 matrices. This device can perform several logic operations simultaneously by different wavelength and/or polarized lights ...
Tatsuo Uchida, Kazuhiko Tadokoro
openaire   +1 more source

Optical logic with variable-grating-mode liquid-crystal devices

Optics Letters, 1980
A liquid-crystal device that performs a two-dimensional intensity-to-spatial-frequency conversion has been investigated for use as an optical transducer. When such a device is used as the input transducer in an optical filtering arrangement, image-intensity levels can be easily manipulated by using appropriate Fourier plane filters.
P, Chavel, A A, Sawchuk, T C, Strand, A R, Tanguay, B H, Soffer   +4 more
openaire   +2 more sources

Nonlinear control of logic structure of all-optical logic devices using soliton interactions

Nonlinear Dynamics, 2021
The all-optical logic device is the key component in the all-optical communication system and all-optical computing. The research based on the all-optical logic device is important to improve the communication efficiency. In this paper, using optical solitons, all-optical logic devices are investigated theoretically.
Qin Zhou, Tianyi Wang, Anjan Biswas, Wenjun Liu   +3 more
openaire   +1 more source

New optical logic device based on optoelectronics

Annual Meeting Optical Society of America, 1987
A new type optical logic device—an optical XOR gate and a clocked optical R-S flip-flop—has been successfully demonstrated using light-emitting diodes (LEDs) and photodiodes (PDs).
Yan Shi, Kai-De Zha, Yi-Li Guo
openaire   +1 more source

Cascade-connective optical parallel logic processor using electrophotonic devices

Applied Optics, 1992
To perform image or arithmetic processing optically, it is necessary that a large number of required optical processors be connected in a series. For such cascade connections, however, coding and decoding processes are undesirable because of the necessity for the complicated hardware that often results.
S, Kawai, Y, Tashiro, H, Ichinose, K, Kasahara   +3 more
openaire   +2 more sources

Rate-equation model for optical logic devices

Integrated Photonics Research, 1990
The effects of saturable gain and saturable absorption have been of interest for optical logic devices because of potential switching times of the order of a few picosecond. Through saturable gain, a semiconductor laser is used to pump a second laser, stimulation emission that will not be captured into the lasing mode of the latter.
J. A. Priest, C. L Balestra, B. G. Clay, M. S. Zediker   +3 more
openaire   +1 more source