On-chip selectable-frequency comb generation by passive harmonic mode locking

Abstract:

A monolithic integrated 2.8-mm colliding-pulse mode-locked laser is demonstrated to emit optical combs with switchable mode spacing for millimeter-wave generation. By selecting the DC-bias condition, the laser is forced to operate in harmonic mode locking regimes. Optical frequency combs with mode spacing of 2nd (30 GHz), 3rd (45 GHz), 4th (60 GHz) and 6th (90 GHz) harmonics are presented. The autocorrelation trace of 2nd harmonic exhibits a 1.03-ps pulsewidth. The beat note of 4th harmonic has an RF linewidth of 520 kHz.

Año de publicación:

2017

Keywords:

• Optical frequency comb generation
• Semiconductor lasers
• Photonic integrated circuits
• Microwave Photonics
• Mode-locked lasers

Fuente:

google

scopus