Tunable dual-wavelength picosecond pulse generation by the use of two Fabry-Pérot laser diodes in an external injection seeding scheme

M. Zhang, D. N. Wang, H. Li, Wei Jin, M. S. Demokan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

33 Citations (Scopus)


An attractive alternative to generate tunable dual-wavelength pulses by external injection seeding of a gain-switched Fabry-Pérot laser diode (FP-LD) is demonstrated. The external-injection-seeding branch consists of only a FP-LD, a 3-dB coupler and two fiber Bragg gratings (FBGs). The two wavelengths can be selected and their spacing can be tuned by adjusting two FBGs. The output sidemode-suppression-ratio is better than 17 dB over a 10-nm wavelength tuning range. The whole system is simple and of low cost.
Original languageEnglish
Pages (from-to)92-94
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number1
Publication statusPublished - 1 Jan 2002


  • External injection seeding
  • Gain switching
  • Picosecond pulse

ASJC Scopus subject areas

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

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