摘要:
An optical interrogation system is described herein that can interrogate a label-independent-detection (LID) biosensor and monitor a biological event on top of the biosensor without suffering from problematical parasitic reflections and/or problematical pixelation effects. In one embodiment, the optical interrogation system is capable of interrogating a biosensor and using a low pass filter algorithm to digitally remove problematic parasitic reflections contained in the spectrum of an optical resonance which makes it easier to determine whether or not a biological event occurred on the biosensor. In another embodiment, the optical interrogation system is capable of interrogating a biosensor and using an oversampling/smoothing algorithm to reduce oscillations in the estimated location of an optical resonance caused by the problematical pixelation effect which makes it easier to determine whether or not a biological event occurred on the biosensor.
摘要:
An optical interrogation system is described herein that can interrogate a label-independent-detection (LID) biosensor and monitor a biological event on top of the biosensor without suffering from problematical parasitic reflections and/or problematical pixelation effects. In one embodiment, the optical interrogation system is capable of interrogating a biosensor and using a low pass filter algorithm to digitally remove problematic parasitic reflections contained in the spectrum of an optical resonance which makes it easier to determine whether or not a biological event occurred on the biosensor. In another embodiment, the optical interrogation system is capable of interrogating a biosensor and using an oversampling/smoothing algorithm to reduce oscillations in the estimated location of an optical resonance caused by the problematical pixelation effect which makes it easier to determine whether or not a biological event occurred on the biosensor.
摘要:
A method for transmitting multicast data in a WiMax/WiBro relay system, including transmitting carrier-interference-noise ratios from UEs to corresponding Relays; selecting the minimum value among the carrier-interference-noise ratios; determining the modulation and coding mode according to the selected minimum value; transmitting the modulation and coding mode to BS; selecting a modulation and coding mode with a highest rate for multicast data on an access link; transmitting the final modulation and coding mode to the Relays; and transmitting data via the access link with the modulation and coding mode determined by the BS.
摘要:
Compound gain flattening filters of optical amplification include a series of filter components with spectral responses that are combined to approach a target loss spectrum. Small variations in the central wavelengths of the component responses can produce large errors in the combined response of the compound gain flattening filter. However, the components can be divided into sub-components with balanced central wavelength deviations to achieve the desired response goals despite exhibiting otherwise detrimental wavelength deviations.
摘要:
The present invention is directed to a generally small mode field diameter (“MFD”) optical fiber having a core bounded by a cladding, a cleaved end, and an expanded mode field diameter. The expanded mode field diameter is formed by thermally diffusing one or more dopants in the core of the small mode field diameter optical fiber using a highly localized heat source. The resulting adiabatic taper has an expanded mode field diameter that is optimized for connection to another optical fiber having a larger mode field diameter. The adiabatic taper is formed in the smaller MFD optical fiber by aligning and abutting the cleaved ends of two fibers having different mode field diameter to form a splice seam. The splice seam is offset a predetermined distance from the center of the region heated by a heat source to splice the fibers and expand the mode field diameters. As the mode field diameters expand, the splice loss across the splice is monitored. When the splice loss is at or sufficiently close to a target loss, heating is terminated, and the spliced optical fiber is cleaved where the mode field diameter of the smaller MFD fiber portion of the spliced optical fiber is optically expanded to match the mode field diameter of another optical fiber.
摘要:
Apparatus and methods for characterizing free-space electromagnetic energy, and in particular, apparatus/method suitable for real-time two-dimensional far-infrared imaging applications are presented. The sensing technique is based on a non-linear coupling between a low-frequency electric field and a laser beam in an electro-optic crystal. In addition to a pratical counter-propagating sensing technique, a co-linear approach is described which provides longer radiated field--optical beam interaction length, thereby making imaging applications practical.
摘要:
A compact microplate imaging system, including: a tunable light source; a lens ensemble to collimate the light source onto the microplate and to transmit light that is reflected from the microplate; a beam splitter to divert a portion of the reflected light; an imaging lens to collect diverted light and to produce an optical image of the at least one sensor of the microplate; and an image sensor for receiving the optical image of the at least one sensor of the microplate. A method for interrogating a sensor using the compact microplate imaging system, as further defined herein, is also disclosed.
摘要:
A method for detecting a clear path of travel for a vehicle utilizing analysis of an image generated by a camera device located upon the vehicle includes monitoring the image, identifying through patch-based clear path detection analysis of the image a first patch within the image that indicates a not clear path, analyzing the first patch through patch smoothing, invalidating the first patch based upon the analyzing the first patch through patch smoothing, utilizing the invalidated first patch to define a clear path of travel for the vehicle, and utilizing the clear path of travel to navigate the vehicle.
摘要:
A base station for use in a wireless network that communicates with mobile stations according to the IEEE 802.16m standard. The base station transmits unicast data and E-MBS data in the downlink to mobile stations using physical resource units (PRUs) that are partitioned into a plurality of frequency partitions. The base station transmits E-MBS data using a first set of PRUs in at least a first common frequency partition, wherein the first set of PRUs are also used by at least a second base station to transmit E-MBS data. The base station further transmits unicast data using a second set of PRUs, wherein the second set of PRUs are randomized with respect to PRUs used by the at least a second base station to transmit unicast data.