公开(公告)号：US20180026597A1

公开(公告)日：2018-01-25

申请号：US15707309

申请日：2017-09-18

Applicant: Luxtera, Inc.

Inventor： Stefan Barabas ,  Joseph Balardeta ,  Simon Pang ,  Scott Denton

IPC: H03G3/30 ,  H03F3/08 ,  H03F1/42 ,  H03F1/08 ,  H03F1/56

CPC classification number: H03G3/30 ,  H03F1/086 ,  H03F1/42 ,  H03F1/56 ,  H03F3/08 ,  H03F3/082 ,  H03F3/087 ,  H03F2200/129 ,  H03F2200/156 ,  H03F2200/453 ,  H03G3/3084

Abstract: Methods and systems for accurate gain adjustment of a transimpedance amplifier using a dual replica and servo loop is disclosed and may include, in a transimpedance amplifier (TIA) circuit comprising a first TIA, a second TIA, and a third TIA, each comprising a configurable feedback impedance, and a control loop, where the control loop comprises a gain stage with inputs coupled to outputs of the first and second TIAs and an output coupled to the configurable feedback impedance of the second and third TIAs: configuring a gain level of the first TIA by configuring its feedback impedance, configuring a gain level of the third TIA by configuring a reference current applied to an input of the first TIA, and amplifying a received electrical signal to generate an output voltage utilizing the third TIA. The reference current may generate a reference voltage at one of the inputs of the gain stage.

公开(公告)号：US20160182151A1

公开(公告)日：2016-06-23

申请号：US14657907

申请日：2015-03-13

Applicant: LUXTERA, INC.

Inventor： Gianlorenzo Masini ,  Joseph Balardeta ,  Scott Denton

IPC: H04B10/25 ,  H04B10/40

CPC classification number: H04B10/40 ,  H04B10/0779

Abstract: Methods and systems for an optical connection service interface may include, in an optical data link comprising an optical fiber, a local control system, first and second transceivers at ends of the optical fiber, generating a control signal for the local control system at frequencies 10 kHz and an optical service signal for an Optical Connection Service interface (OCSi) at intermediate frequencies between 10 Hz and 10 kHz. An optical signal may be modulated at the intermediate frequencies for the OCSi, and may be modulated and communicated to the second transceiver. The communicated modulated signal and the optical data signal may be detected utilizing a photodetector in the second transceiver. The detected optical signal may be demodulated, and an optical power of the optical data signal may be configured based on the demodulated signal.

Abstract translation: 用于光学连接服务接口的方法和系统可以包括在包括光纤的光学数据链路中，本地控制系统，在光纤端部处的第一和第二收发器，在本地控制系统的频率下产生控制信号， 10Hz，并且在10Hz至10kHz之间的中间频率下，利用光纤传送频率> 10kHz的光学数据信号和用于光学连接服务接口（OCSi）的光学服务信号。 光信号可以在OCSi的中频调制，并且可以被调制并传送到第二收发器。 可以利用第二收发器中的光电检测器来检测传送的调制信号和光数据信号。 所检测的光信号可以被解调，并且可以基于解调信号来配置光数据信号的光功率。