摘要:
A medical diagnostic system and method include a software application capable of generating medical data representing patient physiological information based on input signals received directly from one or more sensors. The application is capable of operating on a controller adapted to receive, store, and process the physiological information and may include a touch-screen, one or more auxiliary input devices, circuitry for obtaining position information from a location sensor, and a wireless transceiver to transmit data that may include patient physiological information over a wireless link. The controller may be capable of receiving voice input signals and manually entered input signals. A host may include a digital file for receiving and storing the wireless data, control logic to process the wireless data to generate a medical status of the patient, and a memory storage device for recording the medical status.
摘要:
A broadband light source includes one or more laser diodes that are capable of generating a pump signal having a wavelength shorter than 2.5 microns, a pulse width of at least 100 picoseconds and a pump optical spectral width. The light source also includes one or more optical amplifiers that are coupled to the pump signal and are capable of amplifying the pump signal to a peak power of at least 500 W. The light source further includes a first fiber that is coupled to the one or more optical amplifiers. The first fiber including an anomalous group-velocity dispersion regime and a modulational instability mechanism that operates to modulate the pump signal. The light source also includes a nonlinear element that is coupled to the first fiber that is capable of broadening the pump optical spectral width to at least 100 nm through a nonlinear effect in the nonlinear element.
摘要:
An all-digital display system includes an electronic processor that is operable to receive an internet protocol video packet and to generate a control signal based at least in part on the internet protocol video packet. In one particular embodiment, the electronic processor includes at least a header processor, a CPU electronic processor, and a display processor unit. The all-digital display system also includes one or more light sources capable of generating one or more optical signals and one or more light modulating chips. The one or more light modulating chips are operable to receive the one or more optical signals and to modulate the one or more optical signals based at least in part on the control signal. The all-digital display system further comprises one or more display screens operable to receive the modulated signals communicated from the light modulating chips.
摘要:
In one embodiment, a wireless medical communication system includes a plurality of transmitters. Each of the plurality of transmitters is capable of being coupled to at least one of a plurality of patients and operable to communicate over a communication link a substantially unprocessed physiological data signal associated with at least one patient. At least a portion of the communication link comprises a wireless connection. The system further includes at least one medical diagnostic device operable to receive at least two substantially unprocessed physiological data signals communicated from the plurality of transmitters. Each of the at least two substantially unprocessed physiological data signals are associated with different patients.
摘要:
In one embodiment, a router includes a star switching fabric operable to receive a plurality of optical signals each having a wavelength and each associated with a payload received by the router and to communicate from the switching fabric a plurality of substantially similar sets of the optical signals. The router further includes a plurality of tunable filters each having a configuration speed and each associated with a communication path coupled to one of a plurality of destination elements. Each filter is operable to receive one of the sets of optical signals from the switching fabric and to selectively tune to a wavelength of one of the plurality of optical signals received to facilitate communication of at least the payload associated with that optical signal toward the destination element associated with that filter. The router also includes a plurality of line cards operable to facilitate generation of at least some of the optical signals for transmission to the star switching fabric. At least one of the plurality of line cards includes a switching enhancer operable to increase the switching speed of the router without modifying the configuration speed of any of the tunable filters.
摘要:
In one embodiment, a router includes a plurality of line cards each operable to receive at least one packet comprising an identifier associated with a destination element external to the router. Each line card includes a look-up table operable to facilitate routing the received packet toward the destination element based at least in part on the identifier. The router further includes a plurality of optical transmitters each associated with one of the line cards and operable to generate at a specified wavelength an optical router signal comprising at least a portion of the packet received by the line card associated with that optical transmitter. The router also includes a star switching fabric operable to receive a plurality of optical router signals from the plurality of optical transmitters and to communicate to each of a plurality of tunable filters a substantially similar set of at least some of the plurality of optical router signals. Each of the plurality of tunable filters is operable to selectively tune to a wavelength of one of the plurality of optical router signals to facilitate communication of the packet associated with that optical router signal toward the destination element.
摘要:
An electrode assembly for an elongated implantable lead containing conducting filars. The electrode assembly has a first support hull surrounding a portion of the lead. The electrode assembly also has an electrode hull for at least partially surrounding the support hull and a portion of the lead adjacent to the support hull. The electrode hull secures to the support hull and to the lead at a location axially spaced from the support hull, such that the electrode hull, the support hull, and the lead define a gap. The gap allows the conducting filars to operatively connect to the first support hull.
摘要:
In one aspect of the invention, a gain equalizer comprises a wavelength division demultiplexer operable to separate one or more communication bands into a plurality of wavelengths and an array of phase shifter stages. Each phase shifter stage comprises a micro-electro-optic system (MEMS) device comprising a moveable mirror layer operable to receive a first copy of an input signal from a beam splitter and to reflect the first copy of the input signal for combination with a second copy of the input signal at an output to form an output signal. The moveable mirror layer is displaceable in a substantially piston-like motion to introduce a phase shift between the first and second signal copies at the output, the amplitude of the output signal varying depending on the displacement of the moveable mirror layer. The gain equalizer further comprises a wavelength division multiplexer operable to receive a plurality of phase shifted wavelengths from the second beam splitter and to multiplex at least some of the phase shifted wavelengths into an optical output signal.
摘要:
An apparatus and method are described for combining optical amplification and dispersion compensation in a Raman amplifier. A Dispersion-Managing Raman Amplifier (DMRA) combines Raman amplification with dispersion compensation by selecting the length and dispersion of the gain fiber to balance the dispersion of the link. This gain fiber is also single-mode at the signal and pump wavelengths. The pumping level is adjusted to balance the losses from the gain fiber and transmission link, while the pumping configuration is selected to remain within the 3 dB loss length for the pumping light. When the amplifier is split into two segments, the two segments may be joined by an isolator, a gain equalization element, and/or an optical add/drop multiplexer. For WDM transmission systems based on dispersion-shifted fiber (DSF), operation in the “violet band” between 1430–1530 nm is based on Raman amplification. By using a DMRA, a dispersion and nonlinearity managed system can be implemented. In particular, 4WM does not phase match in such a system, and modulation instability is absent in the transmission link. Furthermore, gain equalization can be added to the DMRA by cascading one or two Mach-Zehnder frequency filters. The invention also includes a method for symmetrically adding channels below and above the C-band, the gain tilt within the C-band can be minimized. Therefore, a roughly equal number of channels should be placed in the short-wavelength S-band and the long-wavelength L-band to minimize the Raman energy exchange in the C-band. Also, whereas C- and L-bands can be amplified using erbium-doped fiber amplifiers, the S-band can use either discrete or distributed Raman amplifiers. To minimize the interaction between pumps for different bands, alternate band pumps can be spatially dispersed and/or cross-polarized. The distributed Raman amplification can be achieved by pumping the transmission line with discrete laser diodes or by a Raman oscillator.
摘要:
In one aspect of the invention, an apparatus operable to provide optical signal processing includes an inner conductive layer including an at least substantially conductive material and a plurality of at least partially reflective mirror strips disposed outwardly from the inner conductive layer and operable to receive an input optical signal, wherein none of the plurality of strips has a width greater than 40 microns. At least some of the strips are operable to undergo a partial rotation in response to a control signal, the partial rotation resulting in a diffraction of the input optical signal wherein a majority of the diffracted input signal is communicated in one direction.