Current Optics and Photonics

Optical Society of Korea (한국광학회)
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Coherent Optical Receiver for Real-time CO-ORMDM Systems

  • Jae Seung, Lee (Department of Electronic Engineering, Kwangwoon University)
  • Received : 2022.08.19
  • Accepted : 2022.11.29
  • Published : 2023.02.25
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Abstract

We propose a new coherent optical receiver (COR) to detect optical receiver mode (ORM) subchannels selectively in coherent optical (CO) ORM division multiplexing (ORMDM) systems. In the CO-ORMDM systems, each optical channel is a linear sum of ORM subchannels, to obtain high spectral efficiencies (SEs). The COR uses an ORM subcarrier as its local oscillator (LO) and reads the transmitted data at the origin times of ORM signals. For example, if the mth ORM subcarrier is used as the LO, then the COR reads the data of the mth ORM subchannel. The proposed COR is fast and can make CO-ORMDM systems useful for real-time optical communication with high SE.

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Acknowledgement

The work reported in this paper was conducted during the sabbatical year of Kwangwoon University in 2019.

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