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  • Ultra-Narrow-Band Tunable Laserline Notch Filter (.pdf)
    We report on an angularly tunable laserline notch filter from 760 to 785 nm with optical density of 5.7, 3 dB bandwidth of 9 cm-1 (0.55 nm) and greater than 80% transmission. The notch filter is a single element composed of six bonded slanted reflective holographic gratings in glass.
  • Thin Film BAW Filters For Wide Bandwidth and High Performance Applications
    High Performance Filters * Narrow Bandwidth Filters (Less than 1%) * High Rejection Out-Of-Band * Low Spurious Content * Low Insertion Loss. Wide Bandwidth * Bandwidths In Excess of 2 % * Any Bandwidth Wider Than Usual Ladders have the steepest skirt selectivity, CRF and Lattice the widest BW
  • An Introduction to Optical Coatings
    Optical coatings are used to manipulate the reflectance and transmittance of an optical component. Typical coating examples include: Antireflection Coatings which reduce the amount of light reflected at a given wavelength or wavelength range; Narrow Band Filters which allow only a given window
  • Wired 8.09: Bright Switch
    there. What we have developed is a narrow-band filter that alters the signature. " Originally, Aerotech experimented with aluminum rods. "But now we have an inch-thick plate of epoxy that contains an intricate pattern of voids and tubes to tune the frequency. The tubes are about 1 millimeter in diameter
  • The Effect of High Stability Reference Oscillators on System Phase Noise
    ] = 61.6 dB). The use of phase-locked loop multipliers can mitigate some of this increase in phase noise because the phase-locked loop acts as a narrow band filter around the carrier. The single sideband filter bandwidth equals the phase-locked loop bandwidth, usually 10 to 100 kHz. The phase noise
  • Sensor Sense: Optical data transmission
    represents a logic 1 value while the other frequency represents a logic 0. This resembles the way modems use two different audio tones to send data over telephone lines. The signal from the infrared sensor in the receiver feeds narrow-band filters tuned to the two frequencies. The filters minimize any
  • Comet Hyakutake
    These are two images of the inner coma of Comet Hyakutake made on April 3 and 4, 1996, using the NASA Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2). The first one, shown in red, was taken through a narrow-band red filter that shows only sunlight scattered by dust particles

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