Aging-induced wavelength shifts in 1.5-μm DFB lasers

Jichai Jeong, Jichai Jeong, L. S. Cheng

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We report measured wavelength shifts of over one hundred 1.5-μm DFB lasers aged under three different conditions for a period corresponding to the system's lifetime (approximately 25 years). The results show that the lasers aged at lower temperature (thus higher optical power) have wider spread of wavelength shifts than the lasers aged at higher temperature. No correlation was observed between the wavelength shifts and the aging rates or the aging-induced changes in the threshold currents. The aging-induced wavelength shifts were relatively small (±1 angstrom) for most lasers. However, about 10% of the lasers exhibit larger wavelength shifts of up to about ±4 angstroms.

Original languageEnglish
Pages (from-to)792-795
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number7
Publication statusPublished - 1994 Jul 1
Externally publishedYes


ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)
  • Atomic and Molecular Physics, and Optics

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