Title :
Integrated Small-Sized Semiconductor Ring Laser With Novel Retro-Reflector Cavity
Author :
Wang, Zhuoran ; Verschaffelt, Guy ; Shu, Yi ; Mezosi, Gabor ; Sorel, Marc ; Danckaert, Jan ; Yu, Siyuan
Author_Institution :
Univ. of Bristol, Bristol
Abstract :
We have successfully designed and fabricated 1.55-mum semiconductor ring lasers with novel parabolic mirror retro-reflector cavities. The parabolic mirror is designed by means of ray-tracing and finite-difference time-domain to optimize its shape and position. The fabricated devices, with a range of sizes down to an equivalent circular ring radius of 16 mum, operate in continuous-wave mode at room temperature. Threshold current of 22 mA and output power up to 140 muW have been achieved for the smallest device. These devices are suitable for high-speed all-optical signal processing and digital photonic functions.
Keywords :
finite difference methods; integrated optoelectronics; laser cavity resonators; laser mirrors; optical fabrication; optical planar waveguides; ray tracing; ring lasers; semiconductor lasers; continuous-wave mode; current 22 mA; digital photonic functions; finite-difference time-domain; high-speed all-optical signal processing; integrated optoelectronics; integrated small-sized semiconductor ring laser; optical planar waveguide; output power; parabolic mirror; power 140 muW; ray-tracing; retro-reflector cavity; threshold current; wavelength 1.55 mum; Design optimization; Finite difference methods; Laser modes; Mirrors; Optical design; Ray tracing; Ring lasers; Semiconductor lasers; Shape; Time domain analysis; Integrated optoelectronics; optical planar waveguide; semiconductor lasers; semiconductor ring laser (SRL);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2007.912554
