Patent
Dynamically configurable spectral filter
Reads0
Chats0
TLDR
In this paper, the authors combined wavelength dispersion (46) and spatial light modulation (50) with regard for polarization management within a feedback control system for dynamically adjusting spectral power distributions among different wavelength channels (12) Micro-optic, hybrid and planar implementations are proposed along with coupling schemes to larger fiber optic systems.Abstract:
Wavelength dispersion (46) and spatial light modulation (50) are combined having regard for polarization management within a feedback control system for dynamically adjusting spectral power distributions among different wavelength channels (12) Micro-optic, hybrid, and planar implementations are proposed along with coupling schemes to larger fiber optic systems (84) Utility is found throughout multi-channel wavelength division multiplexing (WDM) transmission systemsread more
Citations
More filters
Patent
Microelectronic mechanical system and methods
TL;DR: In this paper, a multi-layer structure has a capping layer, that preferably comprises silicon oxide and/or silicon nitride, and which is formed over an etch resistant substrate.
Patent
Method and apparatus for dynamic equalization in wavelength division multiplexing
TL;DR: In this paper, an adjustable diffractive light modulator is used to equalize the power level of wavelength multiplexed signals in wavelength division multiplexing applications, where the diffractive modulators are advantageously comprised of grating light valves.
Patent
Dynamic optical filter having a spatial light modulator
Michael A. Davis,James R. Dunphy,Alan D. Kersey,John A. Moon,Joseph Pinto,James S. Sirkis,Paul Szczppanek +6 more
TL;DR: In this article, a dynamic optical filter is provided to selectively attenuate or filter a wavelength band of light (i.e., optical channel(s)) or a group(s) of wavelength bands of an optical WDM input signal).
Patent
Apparatus and method for spectral-beam combining of high-power fiber lasers
Andy W. Brown,Eric C. Honea,Thomas H. Loftus,Roy D. Mead,Charles E. Hamilton,Anping Liu,Charles A. Lemaire +6 more
TL;DR: In this article, an approach for spectral-beam combining light from a plurality of high-power fiber lasers that use two substantially identical diffraction gratings in a parallel, mutually compensating configuration is presented.
References
More filters
Journal ArticleDOI
Dynamic spectral power equalization using micro-opto-mechanics
Joseph E. Ford,James A. Walker +1 more
TL;DR: In this paper, a voltage-controlled spectral attenuator for gain shaping and power equalization in wavelength division multiplexed single-mode fiber systems is presented, where electrostatic deflection of a silicon nitride quarterwave dielectric layer suspended over a silicon substrate creates a column of variable reflectivity mirrors, is packaged using bulk optics and a diffraction grating to disperse the input spectrum across the device and collect the reflected light into a separate output fiber.
Patent
Frequency-selective optical switch employing a frequency dispersive element, polarization dispersive element and polarization modulating elements
J. S. Patel,Yaron Silberberg +1 more
TL;DR: In this article, a liquid-crystal optical switch capable of switching separate optical signals in a physical input channel to a selected output channel is described, where a diffraction grating spatially divides the input channel into its frequency components, which pass through different segments of a liquid crystal modulator.
Patent
Shaping optical pulses by amplitude and phase masking
TL;DR: In this paper, an input optical pulse is chirped, the chirping pulse is then passed through an optical component that spatially disperses the frequency components of the chyrped pulse and partially compensates the Chirp, the spatially dispersed frequency components are then passed into spatial amplitude and/or phase masks that control and adjust the amplitude or phase of the frequency component, and finally the masked components are passed through the first or second optical component, that returns the masked, spatially distributed frequency components substantially to the spatial distribution of the input pulse while substantially completing
Patent
Optical systems and methods based upon temporal stretching, modulation and recompression of ultrashort pulses
TL;DR: In this article, the authors describe a pulse-shaping technique for producing shaped, stabilized, ultra-short (picosecond to femtosecond) pulses containing encoded information.
Patent
Attenuation device for wavelength multiplexed optical fiber communications
TL;DR: An optical signal attenuation device and associated method for selectively attenuating the signal strengths of different wavelength signals contained within a multiplexed optical transmission was proposed in this paper. But the attenuation method was not considered in this paper.