公开(公告)号：US20240337897A1

公开(公告)日：2024-10-10

申请号：US18624945

申请日：2024-04-02

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Joon Tae AHN ,  Minje SONG ,  Minhyup SONG ,  Taehyun LEE ,  Seungyoung LIM ,  Young Jin JUNG ,  Gyu Dong CHOI

IPC: G02F1/35 ,  H01S3/00

CPC classification number: G02F1/353 ,  H01S3/0057 ,  H01S3/0085 ,  G02F2203/56

Abstract: Disclosed is an optical pulse adjusting device including a pulse shaper that receives an input signal generated based on an optical frequency comb (OFC) signal and outputs a spectrum adjustment signal by adjusting an optical spectrum shape of the input signal, an optical amplifier that outputs an optical amplification signal by amplifying the spectrum adjustment signal, an optical spectrum analyzer (OSA) that outputs an information signal by comparing an optical spectrum shape of the optical amplification signal with a target optical spectrum shape, and a control circuit that outputs a comparison signal based on the information signal. The pulse shaper further receives the comparison signal and adjusts the optical spectrum shape of the input signal based on information about a difference between the optical spectrum shape of the optical amplification signal and the target optical spectrum shape, which is included in the comparison signal.

公开(公告)号：US20230283375A1

公开(公告)日：2023-09-07

申请号：US18081789

申请日：2022-12-15

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Minhyup SONG ,  Hyun Jong CHOI ,  Minje SONG ,  Gyu Dong CHOI ,  Taehyun LEE ,  SEUNGYOUNG LIM

IPC: H04B10/2575 ,  H04B10/548

CPC classification number: H04B10/2575 ,  H04B10/548

Abstract: Disclosed are a photonic multiband filter and a method of operating the same. The photonic multiband filter includes an optical frequency comb that forms multiple optical channels based on a single light source incident from an outside, a modulator that applies an RF signal modulated into an optical domain among a plurality of RF signals to the multiple optical channels, and a pulse shaper that determines a center frequency, a bandwidth, and a passband shape of the RF signal modulated into the optical domain including the multiple optical channels.