Multiwavelength laser source using linear optical amplifier

Khurram Karim Qureshi, Hwa Yaw Tam, W. H. Chung, Ping Kong Alexander Wai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

39 Citations (Scopus)


We propose and demonstrate a high-performance multiwavelength ring laser based on a linear optical amplifier (LOA) for potential applications in dense wavelength-division-multiplexing communication systems. Experimental results indicate that the inhomogeneous gain medium provided by the LOA reduces the gain competition and leads to stable multiwavelength lasing. Thirty-eight wavelengths covering C + L-band with 0.8-nm channel spacing are generated at room temperature. Simultaneous tuning of multiwavelengths is demonstrated and a stability test shows a power fluctuation of less than 0.2 dB during a 3-h test.
Original languageEnglish
Pages (from-to)1611-1613
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number8
Publication statusPublished - 1 Aug 2005


  • Linear optical amplifier (LOA)
  • Multiwavelength laser

ASJC Scopus subject areas

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

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