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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 18,
  • Issue 6,
  • pp. 061401-
  • (2020)

Directly modulated active distributed reflector distributed feedback lasers over wide temperature range operation (−40 to 85°C)

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Abstract

We experimentally demonstrated that the distributed feedback (DFB) lasers with the active distributed reflector achieved a 25.8 Gb/s operation over a wide temperature range of −40 to 85°C. The DFB lasers can achieve additional feedback from an active distributed reflector with accurately controlled phase, and single-mode yields are not related to the position of cleave. The threshold currents of the fabricated laser are 6 mA and 20 mA at −40°C and 85°C, respectively. The side mode suppression ratio of the fabricated laser is above 50 dB at all temperatures. Transmissions of 25.8 Gb/s after 10 km single-mode fibers with clear eye openings and less than 0.8 dB power penalty over a wide temperature range have been demonstrated as well.

© 2020 Chinese Laser Press

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