Title :
A multifrequency waveguide grating laser by selective area epitaxy
Author :
Joyner, C.H. ; Zirngibl, M. ; Meester, J.P.
Author_Institution :
Crawford Hill Lab., AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
We demonstrate a 6 frequency digitally tunable laser based on a waveguide grating router fabricated using selective area epitaxy (SAE). The laser wavelengths span from 1.527 to 1.557 μm with 6.4 nm spacings. The bandgap variation in the active layer plane is from 1.352 μm for waveguide ribs to 1.605 μm for the amplifiers. ASE noise is suppressed by 35 db. These results demonstrate the flexibility of SAE technology for building complete photonic circuits.
Keywords :
diffraction gratings; epitaxial growth; laser noise; laser tuning; optical fabrication; quantum well lasers; semiconductor growth; waveguide lasers; 1.527 to 1.557 mum; 6 frequency digitally tunable laser; ASE noise; active layer plane; complete photonic circuits; laser wavelengths; multifrequency waveguide grating laser; selective area epitaxy; waveguide grating router; waveguide ribs; Circuit noise; Epitaxial growth; Frequency; Gratings; Laser noise; Photonic band gap; Planar waveguides; Ribs; Tunable circuits and devices; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
