摘要:
The present invention is a method and an apparatus for thermo-optic control of optical signals using photonic crystal structures. In one embodiment, a first portion of a split signal is modulated by propagating the signal through a photonic crystal waveguide in which two electrical contacts are laterally spaced from the waveguide region by a plurality of apertures formed through the photonic crystal substrate. A voltage applied across the electrical contacts causes resistive heating of the proximate photonic crystal waveguide through which the signal propagates, thereby modulating the temperature relative to an un-modulated second portion of the split signal that is used as a reference.
摘要:
The present invention is a method and an apparatus for dynamic manipulation and dispersion in photonic crystal devices. In one embodiment, a photonic crystal structure comprises a substrate having a plurality of apertures formed therethrough, a waveguide formed by “removing” a row of apertures, and a plurality of pairs of lateral electrical contacts, the lateral electrical contact pairs extending along the length of the waveguide in a spaced-apart manner. The lateral electrical contact pairs facilitate local manipulation of the photonic crystal structure's refractive index. Thus, optical signals of different wavelengths that propagate through the photonic crystal structure can be dynamically manipulated.
摘要:
The present invention is a method an apparatus for forming lateral electrical contacts for photonic crystal based structures. In one embodiment, a photonic crystal structure comprises a substrate having a plurality of apertures formed therethrough, a waveguide formed by “removing” a row of apertures, and a pair of lateral electrical contacts, each spaced a distance away from the waveguide by at least one row of apertures. The optical mode of the waveguide is confined in the lateral direction by the at least one row of apertures. Thus the apertures provide optical isolation for the electrical contacts, which minimizes losses due to absorption of light by the contacts. The contacts may be used to apply voltages for thermo-optic control of the waveguide, for current injection, or for configuring the waveguide as a photodetector, among other applications.
摘要:
An apparatus and method for measuring the physical quantities of a data center during operation and method for servicing large-scale computing systems is disclosed. The apparatus includes a cart that supports a plurality of sensors. The cart is moveable within the data center. The sensors capture temperature or other physical parameters within the room. The sensor readings, along with position and orientation information pertaining to the cart are transmitted to a computer system where the data is analyzed to select the optimum temperature or other system environmental parameters for the data center.
摘要:
A present invention provides real-time temperature and power mapping of fully operating electronic devices. The method utilizes infrared (IR) temperature imaging, while an IR-transparent coolant flows through a specially designed cell directly over the electronic device. In order to determine the chip power distributions the individual temperature fields for each heat source of a given power and size on the chip (as realized by a scanning focused laser beam) are measured under the same cooling conditions. Then the measured chip temperature distribution is represented as a superposition of the temperature fields of these individual heat sources and the corresponding power distribution is calculated with a set of linear equations.
摘要:
A system and method for measuring the thermal distributions of an electronic device during operation is described. In an embodiment of the present invention, the system includes a duct adapted to be coupled with an electronic device and a coolant flowing through the duct so as to cool the electronic device. The duct and the coolant are at least partially transparent to photons with wavelengths between about 0.1 micron to 20 microns. The system further includes a photon detector located adjacent to the duct for detecting photons. The photon detector captures thermal information from the electronic device during operation of the electronic device, wherein the electronic device is operating under conditions for which the electronic device is designed. The system further includes a processor coupled to the photon detector for generating a thermal distribution of the electronic device based on information received from the photon detector.
摘要:
A method and apparatus for fabricating or altering a microstructure use means for heating to facilitate a local chemical reaction that forms or alters the submicrostructure.
摘要:
Techniques for enhancing thermal design of a system having a number of boundary values are provided. A method for such enhancement includes representing thermal response of the system to the boundary values, obtaining at least one constraining parameter, and determining spatial and/or temporal distribution of the boundary values. The thermal response is represented as a superposition of temperature fields associated with given boundary values. The spatial and/or temporal distribution of the boundary values is determined based on the thermal response represented in the representing step, so as to satisfy the constraining parameter. The boundary values can be, for example, power sources, and the at least one constraining parameter can be, for example, a spatial or temporal location of one of the power sources.
摘要:
One embodiment of the present method and apparatus for detecting leaks in a fluid cooling system enables a user to rapidly detect fluid leaks in the vicinity of a microprocessor chip or other delicate item. In one embodiment, the invention comprises a detector and a border coupled to the detector and disposed peripherally about a protected item (e.g., the microprocessor chip or other delicate item). In one embodiment, the border is a layered structure that is adapted to complete an electrical circuit with the detector when the border comes into contact with fluid.
摘要:
The present invention is a method and an apparatus for tuning an optical delay line. In one embodiment, an optical delay line includes at least one ring resonator in which light is guided or is confined and at least one heater positioned laterally from the ring resonator. The heater produces heat in a localized area, allowing for the tuning of individual delay elements with minimal crosstalk.