US 12,294,818 B2
Multi-rate and multi-modulation ont and olt
David Bowler, Stow, MA (US); Bruce C. Pratt, Bedford, NH (US); John Charles Chamberlain, Hickory, NC (US); and Erik J. Gronvall, Bloomington, MN (US)
Assigned to ARRIS Enterprises LLC, Horsham, PA (US)
Appl. No. 18/294,107
Filed by ARRIS Enterprises LLC, Horsham, PA (US)
PCT Filed Apr. 13, 2023, PCT No. PCT/US2023/018545
§ 371(c)(1), (2) Date Jan. 31, 2024,
PCT Pub. No. WO2023/215088, PCT Pub. Date Nov. 9, 2023.
Claims priority of provisional application 63/338,407, filed on May 4, 2022.
Prior Publication US 2025/0063277 A1, Feb. 20, 2025
Int. Cl. H04B 10/60 (2013.01); H04Q 11/00 (2006.01)
CPC H04Q 11/0067 (2013.01) [H04B 10/60 (2013.01)] 1 Claim
OG exemplary drawing
 
1. An optical network unit for a passive optical network comprising:
(a) a light sensitive diode suitable to sense light from a passive optical network and provide a first output in response thereto;
(b) a transimpedance amplifier that receives said first output and provides a second output in response thereto;
(c) a switch selectively providing said second output to a first amplifier or a second amplifier;
(d) said first amplifier receiving said second output and amplifying said second output based upon a limiting amplifier to provide a limited amplified output;
(e) said second amplifier receiving said second output and amplifying said second output based upon a non-limiting amplifier to provide a non-limited amplified output;
(f) a processor selectively receiving either of said limited amplified output and said non-limited amplified output for subsequent processing;
(g) wherein said first output is current signal, wherein said second output is a voltage signal, wherein said switch is programmable between said first amplifier and said second amplifier, wherein when said second output is a NRZ signal it is provided to said first amplifier, wherein when said second output is a PAM signal it is provided to said second amplifier, wherein non-limited amplifier is a substantially linear amplifier, wherein an output from said first amplifier is deserialized, wherein an output from said second amplifier is deserialized.