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US 8,897,639 B2Granted
Methods and systems for increasing reach and/or split in passive optical networks
AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsElmar Trojer, Stefan Dahlfort
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Abstract
Systems and methods according to these exemplary embodiments provide for methods and systems that allow for either reducing signal loss or improving the optical signal strength in a PON for increasing optical signal range.
Claims8
A method for equalizing optical signals comprising the steps of:
- receiving a plurality of upstream optical signals in a passive optical network (PON), each of said plurality of optical signals comprising a PON burst frame transmitted from a different downstream transmitter;
- receiving schedule information for each of said plurality of optical signals from a system scheduler, wherein said schedule information includes at least timing and power information associated with said plurality of optical signals;
- and
- adjusting each of said plurality of optical signals by either amplifying or attenuating each of said plurality of optical signals based upon said schedule information to mitigate non-uniform signal powers of said PON burst frames.
1 more element
A node for equalizing optical signals comprising:
- an input port for receiving a plurality of upstream optical signals, each of said plurality of optical signals comprising a PON burst frame transmitted from a different downstream transmitter;
- a scheduled power equalizer configured for receiving schedule information for each of said plurality of optical signals from a system scheduler, wherein said schedule information includes at least timing and power information associated with said plurality of optical signals, and
- an adjuster for adjusting each of said plurality of optical signals by either amplifying or attenuating each of said plurality of optical signals based upon said schedule information to mitigate non-uniform signal powers of said PON burst frames.
Dependencies are inferred from the claim text.