摘要:
One embodiment of the present invention provides a system that provides a context-sensitive “community link,” which enables a system or application user to easily access a community forum related to a specific system or application feature. During operation, the system provides a user with access to the system or application feature. While providing such access, the system displays a community link to the user, wherein the community link is directed to a community forum associated with the system or application feature. When the user selects the community link, the system navigates the user to the community forum associated with the system or application feature, so that the user can exchange information with other users about the system or application feature.
摘要:
A transparent metal structure permits the transmission of light over a tunable range of frequencies, for example, visible light, and shields ultraviolet light and all other electromagnetic waves of lower frequencies, from infrared to microwaves and beyond. The transparent metal structure comprises a stack of alternating layers of a high index material and a low index material, at least one of the materials being a metal. By carefully choosing the thickness of the second material, the transparent window can be tuned over a wide range of frequencies.
摘要:
A device and method of optics propagation and signal control integrated with micro-electro-mechanical-switches (MEMS). This device modifies optical transmission properties of a transparent multilayer metal stack by mechanically varying the thickness of an air gap between layers in the stack This is accomplished by utilizing MEMS coupled with the stack to change the optical path in a given layer of the transparent multilayer metal stack. This can be accomplished by developing a hybrid combination of transparent multilayer stacks and MEMS, wherein an air gap is used as one of the dielectric layers. The air gap thickness can be controlled by the MEMS device thereby enabling dramatic control of the optical path.
摘要:
Support is provided for multiple late binding objects with a same identifier, in an operating environment that only supports registration of a single late binding object with the same identifier. Each of a plurality of processes is associated with one of a plurality of late binding objects, such that at least two processes are each associated with a separate late binding object having the same identifier. Responsive to one of the plurality of processes attempting to access a late binding object by its identifier, a determination is made as to which late binding object is associated with the process. The associated late binding object is made available to the process.
摘要:
Non-linear reflectivity and non-linear transmissivity of a first photonic signal incident on a photonic band gap (PBG) structure are controlled by applying a second photonic signal to the PBG structure while the first photonic signal is incident on the PBG structure. The first and second photonic signals have respective frequencies near a low frequency, first order band gap edge and a high frequency, second order band gap edge resonance peak of the PBG structure. The first photonic signal undergoes enhanced non-linear gain near the band gap edges when a predetermined phase difference is imposed between the first and second photonic signals, resulting in dramatic reflectivity and transmissivity changes for a band gap structure of only a few microns in length.
摘要:
A photonic band gap structure device and method for delaying photonic signals of a predetermined frequency and a predetermined bandwidth by a predetermined delay is provided. A Fabry-Perot delay line device has several regions of periodically alternating refractive material layers which exhibit a series of photonic band gaps and a periodicity defect region, interposed between the regions of periodically alternating refractive material layers. The Fabry-Perot delay line device imparts a predetermined delay to photonic signals that pass therethrough. The introduction of the periodicity defect region into this photonic band gap structure creates a sharp transmission resonance within the corresponding photonic band gap of the structure and causes at least an order of magnitude improvement in photonic signal delay for a band-edge delay line device of similar size. Variable photonic delays to multiple photonic signals are also generated by this Fabry-Perot delay line device. In addition, a photonic signal delay device based on an optical fiber grating structure is provided. A defect layer doped with a gain medium increases the density of modes thereby increasing the density of photons at a particular frequency. The introduction of gain automatically causes an increase in the photon density, and therefore, a narrowing of the density of modes. This allows tuning of the group velocity, just as if periods were being added. This also enables larger delays.
摘要:
An order fulfillment tool may indicate fulfillability information for a plurality of open orders and receive user input specifying one or more orders for potential fulfillment. In response, the order fulfillment tool may indicate revised fulfillability information for orders not specified for potential fulfillment according to the effects on a current inventory if the specified orders were fulfilled. The order fulfillment tool may also recommend orders for potential fulfillment according to user-specified order fulfillment criteria and indicate revised fulfillability information for orders not recommended for potential fulfillment. Such an order fulfillment tool may also receive user input specifying fulfillment levels for individual items of orders and update fulfillability information for other orders according to the effect of the individual fulfillment levels.
摘要:
An LCD device for displaying an image includes pixel control electrodes constructed as a transparent metal stack having a photonic band gap (PBG) structure that transmits a visible range of wavelengths and suppresses a non-visible range of wavelengths. A liquid crystal layer between the pixel control electrodes controls the transmission of light in response to a voltage applied across the pixel control electrodes. A light emitting structure (LES), such as a light emitting diode (LED) or light emitting polymer (LEP) device includes a cathode electrode, a substrate, an active layer for emitting visible light, and a transparent anode electrode having a PBG structure.
摘要:
A photonic band gap (PBG) device is provided for frequency up and/or down-converting first and second photonic signals incident on the device to produce a down-converted output photonic signal. When the first and second incident photonic signals have respective first and second frequencies ω3 and ω2, the down-converted photonic signal has a third frequency ω1=ω3−ω2. When the first incident field has a frequency ω1, the first up-converted photonic signal has a second frequency ω3=ω1+ω2. The second up-converted photonic signal has a third frequency ω3=ω1+ω2. Thus, the PBG device can be used to generate coherent near- and mid-IR signals by frequency down-converting photonic signals from readily available photonic signal sources, or red, blue, and ultraviolet signals by up-converting the same readily available photonic signal sources. The PBG device includes a layered stack having a plurality of first material layers and a plurality of second material layers. The first and second material layers are arranged such that the PBG device exhibits a photonic band gap structure exhibiting first, second and third transmission band edges respectively corresponding to the first, second, and third frequencies. An interaction of the first and second photonic signals with the arrangement of layers in the metal stack causes a mixing process to generate the both up and down-converted photonic signal at the third frequency.