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FIBER-TO-THE-HOME (FTTH) OPTICAL RECEIVER WITH DISTRIBUTED GAIN CONTROL
FIBER-TO-THE-HOME (FTTH) OPTICAL RECEIVER WITH DISTRIBUTED GAIN CONTROL
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机译:具有分布式增益控制的光纤到户(FTTH)光学接收器
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摘要
A fiber-to-the-home (FTTH) system transmits forward and reverse optical signals, such as video, voice, and data signals, via optical fiber, and includes a plurality of home network units. The home network units include an optical receiver for receiving at least one of the video, voice, and data signals. Included is a plurality of gain stages that are distributed throughout the optical receiver. The gain stages include a preamplifier stage, two interstage amplifiers, and a postamplifier stage. Two gain control circuits automatically adjust the gain of the video signal based upon the input power level to the FTTH optical receiver. Additionally, a tilt network performs level compensation for externally located coaxial cable. A signal is then provided to a device located within a home via the coaxial cable at the proper RF level having low noise signals.
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