An integrated nonlinear optical loop mirror in silicon photonics for all-optical signal processing

Zifei Wang, Ivan Glesk, Lawrence R. Chen

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)
37 Downloads (Pure)


The nonlinear optical loop mirror (NOLM) has been studied for several decades and has attracted considerable attention for applications in high data rate optical communications and all-optical signal processing. The majority of NOLM research has focused on silica fiber-based implementations. While various fiber designs have been considered to increase the nonlinearity and manage dispersion, several meters to hundreds of meters of fiber are still required. On the other hand, there is increasing interest in developing photonic integrated circuits for realizing signal processing functions. In this paper, we realize the first-ever passive integrated NOLM in silicon photonics and demonstrate its application for all-optical signal processing. In particular, we show wavelength conversion of 10 Gb/s RZ-OOK signals over a wavelength range of 30 nm with error-free operation and a power penalty of less than 2.5 dB, we achieve error-free NRZ-to-RZ modulation format conversion at 10 Gb/s also with a power penalty of less than 2.8 dB, and we obtain error-free all-optical time-division demultiplexing of a 40 Gb/s RZ-OOK data signal into its 10 Gb/s tributary channels with a maximum power penalty of 3.5 dB.
Original languageEnglish
Article number026102
Number of pages8
JournalAPL Photonics
Issue number2
Publication statusPublished - 5 Feb 2018


  • silicon photonics
  • optical signal processing
  • optical communications
  • nonlinear optics

Fingerprint Dive into the research topics of 'An integrated nonlinear optical loop mirror in silicon photonics for all-optical signal processing'. Together they form a unique fingerprint.

Cite this