A parity-time-symmetric optoelectronic oscillator with polarization multiplexed channels


ÖZGÜN E., Uyar F., KARTALOĞLU T., ÖZBAY E., Ozdur I.

JOURNAL OF OPTICS, vol.24, no.5, 2022 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 24 Issue: 5
  • Publication Date: 2022
  • Doi Number: 10.1088/2040-8986/ac5ecf
  • Journal Name: JOURNAL OF OPTICS
  • Journal Indexes: Science Citation Index Expanded, Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Keywords: optoelectronic oscillators, polarization multiplexing, parity-time symmetry, microwave optics, NON-HERMITIAN HAMILTONIANS, PSEUDO-HERMITICITY, PT-SYMMETRY, LASER

Abstract

In this manuscript, we experimentally demonstrate a parity-time-symmetric optoelectronic oscillator (OEO) with polarization multiplexed channels. We obtained a microwave single-mode oscillation at 9.5 GHz with phase noise values of -116.2 and -122.3 dBc Hz(-1) at 10 kHz offset frequencies, and side mode suppression values below -68 and -75 dBc Hz(-1), by utilizing a 1 km long and 5 km long single mode fiber delay lines, respectively. Our experimental results suggest that parity-time-symmetric OEOs with polarization multiplexed channels are simple and cost-efficient alternatives to their more complex counterparts.