Pulse or digital communications – Pulse width modulation
Patent
1995-12-29
1998-04-07
Tse, Young T.
Pulse or digital communications
Pulse width modulation
375287, 375289, 359186, H03K 526, H03K 908
Patent
active
057373663
ABSTRACT:
An apparatus and method for receiving line encoded bursts of information removes unwanted background light and has a maximum inter-packet idle time of only one bit between bursts. The invention permits the use of AC coupling in a receiver and results in outputting data with constant pulse widths irrespective of optical signal power levels, etc. . . In one embodiment, a receiver has a wide dynamic range, is highly stable, may be used over all frequencies of interest without developing high speed electronics or optical components, and has no sensitivity penalty as compared to existing burst mode/packet mode receivers. Because the receiver completely removes common signals, base line wander problems are also removed. The inventive apparatus and method is superior to existing burst mode/packet mode receivers in the presence of unwanted background light and long runs of "1"s and "0"s.
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Lucent Technologies - Inc.
Tse Young T.
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