Patent
Fabry-perot modulator
TLDR
In this article, the authors proposed an asymetric Fabry-Perot (FP) modulator, which includes a quantum well structure having wider (approximately 150A) than usual (about 100A) wells.Abstract:
An asymetric Fabry-Perot (FP) modulator includes a quantum well structure having wider (approximately 150A) than usual (about 100A) wells. The FP cavity has a resonance at a wavelength of an excitonic absorption peak of the QW structure. Although the maximum change in absorption under applied bias is less with 150A wells than with 100A wells, the characteristics of the electroabsorption are also altered, with the result that the largest change occurs at the wavelength of the band-edge el-hhl exciton at zero bias. Absorption can be reduced by biasing the QW and hence the AFPM can have a normally-off (zero bias, zero reflectivity) characteristic. Such an arrangement makes possible higher contrast modulation and/or lower operating voltages. The FP modulator may be used in SEEDs.read more
Citations
More filters
Patent
Backlit display with improved dynamic range
TL;DR: A display is backlit by a source having spatially modulated luminance to attenuate illumination of dark areas of images and increase the dynamic range of the display as discussed by the authors, which is called backlit display backlighting.
Patent
Electrostatically tunable optical device and optical interconnect for processors
B. Pezeshki,James S. Harris +1 more
TL;DR: In this paper, a microlaser is described which is electrostatically tunable and can be adjusted to change the effective optical distance between the reflectors and thus tune the optical frequency at which lasing occurs.
Patent
High dynamic range images from low dynamic range images
Scott J. Daly,Laurence Meylan +1 more
TL;DR: In this article, a method for displaying an image includes receiving an image having a first luminance dynamic range and modifying the image to a second-level dynamic range free from being based upon other images, where the second dynamic range is greater than the first dynamic range.
Patent
Coded aperture imaging system
TL;DR: In this article, the use of coded aperture imaging for imaging through a curved optical element is described as the image decoding can automatically remove any aberrations introduced by the curved element.
Patent
Liquid crystal display with adaptive color
TL;DR: In this paper, the system may determine the viewer (32) views the image on the display (30) and an imaging device (34) affixed to the display is provided to a detection and/or tracking module (38).
References
More filters
Patent
Electro-optical device
TL;DR: In this article, an electro-optical device is arranged as a Fabry Perot etalon (10) comprising two mirrors (18,24) and a central region (22).
Journal ArticleDOI
Electroabsorptive Fabry-Perot reflection modulators with asymmetric mirrors
TL;DR: In this article, an asymmetric Fabry-Perot reflection modulator with an on/off ratio of 22, insertion loss of 3.7 dB, and bandwidth of 4.4 nm for an operating voltage swing of 11 V was reported.
Patent
Nonlinear and bistable optical device
TL;DR: In this article, a means responsive to light for generating a photocurrent, a structure having a semiconductor quantum well region, and a mean responsive to the photocurrent for electrically controlling an optical absorption of the semiconductor well region.
Journal ArticleDOI
Quantum Wells For Optical Information Processing
TL;DR: The quantum-confined Stark effect (QCSE) as mentioned in this paper is a well-known phenomenon in semiconductor devices that enables electrically controlled optical modulators and optically controlled self-electro-optic effect devices that can operate at high speed and low energy density.
Journal ArticleDOI
Extremely low-voltage Fabry-Perot reflection modulators
TL;DR: In this paper, a surface-normal Fabry-Perot reflection modulator with a reflection change of 47% for an operating voltage swing of only 2 V, i.e. 23%/V, is discussed.