Low-cost optoelectronic self-injection-locked oscillators

Kwang Hyun Lee, Jae Young Kim, Woo Young Choi, Hideki Kamitsuna, Minoru Ida, Kenji Kurishima

Research output: Contribution to journalArticle

22 Citations (Scopus)


We demonstrate a new configuration for an optoelectronic self-injection-locked (SIL) oscillator, where a part of the electrical output signal is self-injected after passing through a long optical delay line for output phase-noise reduction. The SIL oscillator consists of an electrical free-running oscillator and a long optical feedback loop. For the compact and low cost configuration, the free-running oscillator is realized with an InP HPT-based monolithic oscillator and electrical-to-optical conversion is carried out by two low-speed and low-cost laser diodes. With this new configuration, we achieve more than 55-dB phase-noise reduction at 10-kHz frequency offset from the center frequency of about 10.8 GHz by injecting 8-dBm optical signals without using any high-speed optoelectronic components.

Original languageEnglish
Pages (from-to)1151-1153
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number13
Publication statusPublished - 2008 Jul 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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    Lee, K. H., Kim, J. Y., Choi, W. Y., Kamitsuna, H., Ida, M., & Kurishima, K. (2008). Low-cost optoelectronic self-injection-locked oscillators. IEEE Photonics Technology Letters, 20(13), 1151-1153. https://doi.org/10.1109/LPT.2008.925189