Ch11Sec5_1

Ch11Sec5_1 - frequencies below about 10 Hz. Dr. Joseph C....

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Dr. Joseph C. Palais 11.5 1 THE FIBER FORUM Fiber Optic Communications Dr. JOSEPH C. PALAIS PRESENTED BY
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Dr. Joseph C. Palais 11.5 2 Section 11.5 Other Sources of Noise
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Dr. Joseph C. Palais 11.5 3 11.5.1 Current Noise This noise is caused by current fluctuations in semiconductors (such as in the receiver’s electronic amplifiers) that vary as 1/f below 1 Hz. Current noise is minimized by electronic filters that attenuate
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Unformatted text preview: frequencies below about 10 Hz. Dr. Joseph C. Palais 11.5 4 11.5.2 Background Noise Background noise arises from external light sources. If external light were to strike the photodetector, the resulting photocurrent would mask the signal. This is not a problem with fibers because the photodetector is protected form outside light....
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This note was uploaded on 01/26/2011 for the course EEE 546 taught by Professor Palais during the Spring '10 term at ASU.

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Ch11Sec5_1 - frequencies below about 10 Hz. Dr. Joseph C....

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