InP femtosecond mode-locked laser in a compound feedback cavity with a switchable repetition rate Articles uri icon

publication date

  • February 2018

start page

  • 507

end page

  • 510


  • 3


  • 43

International Standard Serial Number (ISSN)

  • 0146-9592

Electronic International Standard Serial Number (EISSN)

  • 1539-4794


  • A monolithically integrated mode-locked semiconductor laser is proposed. The compound ring cavity is composed of a colliding pulse mode-locking (ML) subcavity and a passive Fabry -Perot feedback subcavity. These two 1.6 mm long subcavities are coupled by using on-chip reflectors at both ends, enabling harmonic mode locking. By changing DC-bias conditions, optical mode spacing from 50 to 450 GHz is experimentally demonstrated. Ultrafast pulses shorter than 0.3 ps emitted from this laser diode are shown in autocorrelation traces. (C) 2018 Optical Society of America


  • Electronics
  • Optics


  • mode-locked lasers; semiconductor lasers; photonic integrated circuits