公开(公告)号：US20240380492A1

公开(公告)日：2024-11-14

申请号：US18660145

申请日：2024-05-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sanghwa YOO ,  Heuk PARK ,  Joon Ki LEE

IPC: H04B10/50 ,  G02F1/21 ,  G02F1/225 ,  H04B10/548

Abstract: A silicon photonics transmitter and a method therefor are disclosed. The silicon photonics optical transmitter includes a Mach-Zehnder modulator, a plurality of optical couplers, a plurality of photodetectors, a monitor configured to measure an input optical power based on a sum of photocurrents or photovoltages corresponding to the plurality of photodetectors, and a modulator controller configured to control a voltage supplied to the Mach-Zehnder modulator based on a difference between the photocurrents or the photovoltages corresponding to the plurality of photodetectors.

公开(公告)号：US20190115720A1

公开(公告)日：2019-04-18

申请号：US16028723

申请日：2018-07-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sanghwa YOO ,  Kwangjoon KIM ,  Joon Ki LEE

IPC: H01S5/068 ,  H01S5/125 ,  H01S5/06 ,  H04B10/50 ,  H04B10/572

Abstract: An optical signal transmission apparatus including a temperature-independent wavelength tunable laser includes a distributed Bragg reflector (DBR) laser including a DBR mirror region configured to convert a wavelength of an output optical signal based on a first supply current, and an optical gain region configured to control a gain of the output optical signal based on a second supply current, a semiconductor optical amplifier (SOA) configured to amplify an optical signal output from the DBR laser based on a third supply current, and a processor configured to supply a compensation current to the optical gain region based on a wavelength conversion request, to suppress a wavelength overshoot due to a carrier effect caused by the first supply current provided to the DBR mirror region.