1.8-THz-wide optical frequency comb emitted from monolithic passively mode-locked semiconductor quantum-well laser Articles uri icon

publication date

  • September 2017

start page

  • 3872

end page

  • 3875

issue

  • 19

volume

  • 42

International Standard Serial Number (ISSN)

  • 0146-9592

Electronic International Standard Serial Number (EISSN)

  • 1539-4794

abstract

  • We report on an optical frequency comb with 14 nm (∼1.8  THz∼1.8  THz) spectral bandwidth at a −3  dB−3  dB level that is generated using a passively mode-locked quantum-well laser in photonic integrated circuits fabricated through an InP generic photonic integration technology platform. This 21.5-GHz colliding-pulse mode-locked laser cavity is defined by on-chip reflectors incorporating intracavity phase modulators followed by an extracavity semiconductor optical amplifier as a booster amplifier. A 1.8-THz-wide optical comb spectrum is presented with an ultrafast pulse that is 0.35 ps wide. The radio frequency beat note has a 3-dB linewidth of 450 kHz and 35-dB SNR.

keywords

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