摘要:
A system for reading from and writing on rotatable information media includes embedded reference tracks whose edges are used for precise information track positioning and also for precise laser source positioning. The nature of the returned signal is such that it can be used for monitoring the aging characteristics of the laser light source. Maximum and minimum values are gathered over time and stored in any convenient non-volatile storage device, even the disk itself.
摘要:
A matrix of cluster connectors for switching and interconnecting large numbers of optical fiber and/or electrical conductors (such as coaxial lines) to a module used in computers, communications and related applications. The matrix of pluggable cluster connector receptacles is located on a major surface of a module, such as a ceramic multi-chip module or a thin film silicon chip carrier module. A semiconductor wafer is fabricated with a matrix of angled slots fabricated to form the matrix of receptacles. The wafer is a major surface of the module, and may have another opening for chips fastened to the module surface below the wafer. Each angled slot engages an end of a plug member to align any optical fiber ends contained in the cluster held by the plug with a corresponding lens/light signal transducer in the module. Instead, a light transducer may be contained in the plug to provide electrical signals to a contact of the plug mating with a contact deposited on the wall of the engaged slot, which also engage contacts connected to coaxial lines in the cluster.
摘要:
A method for encryption key management including accepting authenticated unencrypted data into a processor of a server computing device that is configured as a private key secure processor vault, the operation of which is isolated from other components of the server computing device thereby preventing unauthorized access to the processor and the data contents therein; encrypting the authenticated unencrypted data based on an existing private key stored in the processor thereby converting it to encrypted data; and transmitting the encrypted data out of the processor. A system and computer program product is also provided.
摘要:
Methods and systems for fabrication of injection molded optical components are disclosed. In one embodiment, a moldplate having one or more cavities is configured to receive injected optical material within walls of the cavities. The cavities are designed with a predetermined geometric profile approximately corresponding to a predetermined optical profile of an optical element to be formed therein. When molten optical material is injected into the cavities of the moldplate, the injected optical material forms a meniscus due to surface tension between the optical material and the wall of the cavities. The meniscus thus provides a shape corresponding to the predetermined optical profile. The optical material is then rapidly cured with actinic radiation, and a desired optical element with high-precision dimensions is formed within the cavities of the moldplate. In some embodiments, the moldplate is spun around a spin axis such that the meniscus is adjusted to match the predetermined optical profile within a certain tolerance.
摘要:
A byte-wide optical switch and switching method are provided. The optical switch includes a first set of ports for receiving in parallel an optical byte of data, and multiple second sets of ports each capable of outputting in parallel the optical byte of data. An array of optical switching elements is disposed between the first set of ports and the multiple second sets of ports. The array of optical switching elements direct the optical byte of data in parallel from the first set of ports to at least one second set of ports of the multiple second sets of ports. The switching elements may comprise micro-electro mechanical system (MEMS) devices, each having a position controllable reflective surface. Thin film optical filters can be provided on the reflective surfaces for wavelength selective switching.
摘要:
A method for data security policy enforcement including inspecting incoming and outgoing data packets from a server computing device for attributes in accordance with a data security policy, processing the data packets in accordance with the security policy based on the inspected attributes, and routing the data packets in accordance with the security policy based on the inspected attributes, wherein incoming and outgoing data from the server computing device composed of the data packets is processed and routed in accordance with the security policy on a per-packet basis. A system and computer program product is also provided.
摘要:
A method for encryption key management including accepting authenticated unencrypted data into a processor of a server computing device that is configured as a private key secure processor vault, the operation of which is isolated from other components of the server computing device thereby preventing unauthorized access to the processor and the data contents therein; encrypting the authenticated unencrypted data based on an existing private key stored in the processor thereby converting it to encrypted data; and transmitting the encrypted data out of the processor. A system and computer program product is also provided.
摘要:
A wavelength Division Multiple Access (WDMA) free space broadcast technique for optical backplanes and interplanar communications for providing free space optical interconnects between multiple circuit cards in a computer system or networking device which is compatible with existing electrical backplanes. Current equipment can easily be upgraded in the field to take advantage of this new approach by simply replacing existing printed circuit boards, without requiring a complete redesign of the copper backplane.
摘要:
A method and system for controlling the fabrication of an optical device having a given property at a defined wavelength. The method comprises the steps of providing a substrate, depositing a material on the substrate to form a film thereon, and controlling a set of manufacturing parameters as the film is being formed on the substrate to make the optical device. The method comprises the further steps of generating an optical signal having a given wavelength, dithering the wavelength of the optical signal, and applying the dithered optical signal to the film being formed on the substrate to modulate the optical signal. A correlation signal is generated to represent the difference between the given wavelength and the defined wavelength, and that correlation signal is used to adjust at least one of the manufacturing parameters to make the optical device with said given property at the defined wavelength.
摘要:
A method for writing information on a laser writable recording blank with reference tracks utilizes a split laser beam. A first of these beams is used for writing while the second is directed to a mirror or similar device which causes the second beam to move across a track edge in an oscillatory manner. The laser light reflected in this process is converted to an electrical signal which is analyzed to determine very precisely the distance between the track edge and the point of impingement of the first beam on the disk. Power in this first beam is then controlled so as to write information on the disk. The precise control allows a plurality of information tracks to be written between adjacent reference track portions.