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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1991),
  • paper CTuA1

0.98-μm strained quantum well lasers

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Abstract

Er-doped fiber optical amplifiers (EDFAs) are becoming indispensable for optical fiber communications as in-line repeaters, boosters, and preamplifiers. Pump sources are key components of EDFAs, and among the many possible pump bands, 0.98-μm and 1.48-μm bands are good choices because they are free from excited-state of absorption (ESA). Although 1.48-μm InGaAsP/InP lasers are, because of their advanced technology, the most popular pump source, newly developed 0.98-μm lasers have advantages over these in terms of pumping efficiency, low noise figure, and temperature insensitivity as well as higher efficiency of the laser itself.

© 1991 Optical Society of America

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