US 11,942,985 B2
10G rate OLT terminal transceiver integrated chip based on XGSPON with DFB laser
An Lin, Xiamen (CN); Jinghu Li, Xiamen (CN); and Zhang Fan, Xiamen (CN)
Filed by XIAMEN EOCHIP SEMICONDUCTOR CO., LTD, Xiamen (CN)
Filed on May 24, 2023, as Appl. No. 18/323,362.
Claims priority of application No. 202210576014.2 (CN), filed on May 24, 2022.
Prior Publication US 2023/0388010 A1, Nov. 30, 2023
Int. Cl. H04B 10/038 (2013.01); H04B 10/40 (2013.01); H04Q 11/00 (2006.01)
CPC H04B 10/038 (2013.01) [H04B 10/40 (2013.01); H04Q 11/0067 (2013.01); H04Q 2011/0081 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A 10G rate OLT terminal transceiver integrated chip based on XGSPON and DFB laser, comprising:
a burst mode receiver RX, a continuous mode transmitter TX and a digital control unit DIGIITAL,
wherein an optical signal from each ONU client is processed through a burst transimpedance amplifier TIA into an electrical signal, then the burst-mode receiver RX amplifies the electrical signal, processes amplitude detection of the electrical signal, determines if an amplitude of the electrical signal meets a threshold requirement, and outputs a detection result of the electrical signal to a host, and comprises a fast recovery module to discharge charges in an AC coupling capacitor to achieve multi-packet transmission without mutual interference, thereby meeting the timing sequence requirement of the XGSPON protocol;
the continuous mode transmitter TX receives the electrical signal attenuated by a PCB board, and in response to a degree of attenuation, selects a bypass path BYPASS for transmission or outputs the electrical signal after a signal quality of the electrical signal is processed and improved by a clock data recovery path CDR to drive the DFB laser; and
the digital control unit DIGIITAL communicates with the host, and provides control signals for the burst mode receiver RX and the continuous mode transmitter TX.