DescriptionWe demonstrate a novel method for mode-hop-free tuning of a narrow linewidth hybrid integrated InP-Si3N4 laser, in which the tuning range is not limited by the laser cavity’s free spectral range.
Chip-sized diode lasers with ultra-narrow spectral linewidth are of high interest for many applications, e.g. for phase encoding in optical communications and precision metrology [1,2]. Recently, a record-narrow intrinsic linewidth of 290 Hz was achieved with hybrid integration of an InP semiconductor optical amplifier (SOA) and a low-loss dielectric waveguide feedback circuit with a Vernier spectrally selective feedback filter that significantly extends the on-chip cavity length . However, increasing the cavity length also reduces the cavity mode spacing, which causes undesired instabilities in the form of mode hops and power fluctuations when tuning the laser wavelength.
|Period||24 Jun 2019|
|Event title||Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference, CLEO/Europe-EQEC 2019|
|Sponsors||EPS Young Minds, Quantum Electronics and Optics Division|
|Location||Munich, Germany, Bavaria|
|Degree of Recognition||International|