公开(公告)号：US12294412B2

公开(公告)日：2025-05-06

申请号：US18015071

申请日：2020-12-21

Applicant: ACCELINK TECHNOLOGIES CO., LTD.

Inventor： Zhi Yang ,  Cuihong Zhang ,  Weidong Ma

IPC: H04B10/69 ,  H04B10/60

Abstract: Disclosed are a signal demodulation method and apparatus, a computer storage medium and a device. The method comprises: acquiring a signal to be demodulated; performing direct current blocking and bias processing on the signal to obtain a processed signal; comparing the processed signal with a preset decision signal, and obtaining a demodulation signal according to a comparison result. Thus, direct current blocking processing on a modulation signal can avoid dynamic changes of DC components caused by average power changes of carrier signals, avoiding wrongly demodulating the modulation signal. Bias processing after the direct current blocking on the modulation signal can further realize an AC signal decision without introducing a negative pressure source. A real-time decision on the processed signal via the preset decision signal can dynamically adapt the average power of carrier signals, thereby ensuring to correctly demodulate the modulation signal and improving the accuracy of demodulation results.

公开(公告)号：US20180241473A1

公开(公告)日：2018-08-23

申请号：US15754912

申请日：2015-12-18

Applicant: Accelink Technologies Co., Ltd.

Inventor： Yunyu Jing ,  Chengpeng Fu ,  Jintao Tao ,  Cuihong Zhang ,  Tao Xiong ,  Zhi Yang

IPC: H04B10/294 ,  H01S3/30 ,  H01S3/067

Abstract: Provided are a control method and system for a cascade hybrid amplifier, in which respective hybrid amplifiers in the cascade hybrid amplifier simultaneously start to implement a pump-starting process comprising: when the hybrid amplifier receives a request to start pumping, determining whether conditions are satisfied, if yes, determining stability of power of an input light of a Raman, starting pumping of an EDFA so that the EDFA enters into an APC operation mode; starting pumping of the Raman, and calculating a gain deviation according to the calculated input light powers before and after pump-starting of the Raman when no reflection alarm exists; and adjusting gain of the Raman according to the gain deviation, and switching to an AGC (automatic gain control) operation mode after the adjustment; and switching the EDFA to the AGC operation mode.

公开(公告)号：US10686525B2

公开(公告)日：2020-06-16

申请号：US15754912

申请日：2015-12-18

Applicant: Accelink Technologies Co., Ltd.

Inventor： Yunyu Jing ,  Chengpeng Fu ,  Jintao Tao ,  Cuihong Zhang ,  Tao Xiong ,  Zhi Yang

IPC: H04B10/294 ,  H01S3/23 ,  H01S3/10 ,  H01S3/13 ,  H04B10/293 ,  H01S3/067 ,  H04B10/071 ,  H01S3/16 ,  H01S3/30 ,  H01S3/00

Abstract: Provided are a control method and system for a cascade hybrid amplifier, in which respective hybrid amplifiers in the cascade hybrid amplifier simultaneously start to implement a pump-starting process comprising: when the hybrid amplifier receives a request to start pumping, determining whether conditions are satisfied, if yes, determining stability of power of an input light of a Raman, starting pumping of an EDFA so that the EDFA enters into an APC operation mode; starting pumping of the Raman, and calculating a gain deviation according to the calculated input light powers before and after pump-starting of the Raman when no reflection alarm exists; and adjusting gain of the Raman according to the gain deviation, and switching to an AGC (automatic gain control) operation mode after the adjustment; and switching the EDFA to the AGC operation mode.