Title :
An InGaAs/GaAs SQW laser integrated with a surface-emitting harmonic generator for DWDM applications
Author :
Dai, H. ; Janz, S. ; Normandin, R. ; Nielsen, J. ; Chatenoud, F. ; Williams, R.
Author_Institution :
Nat. Res. Council of Canada, Ottawa, Ont., Canada
Abstract :
An In/sub 0.22/Ga/sub 0.78/As/GaAs single quantum-well (SQW) laser integrated monolithically with a surface-emitting harmonic generator (SEHG) segment was fabricated and tested. By coupling a 1.06- mu m Nd:YAG laser output into the active device, the green surface-emitting light at 0.51 mu m was observed as the result of nonlinear interactions within the SEHG segment. The nonlinear interaction cross section A/sup nl/ of the device was found to be 2.3*10/sup -7/ W/sup -1/, which agrees well with theory. The application of the active devices as a dense wavelength-division-multiplexing (DWDM) demultiplexer was demonstrated with a tunable Ti:sapphire laser to simulate the multiwavelength signal source and a CCD detector array to record the spatially separated signals of different wavelength. System resolution better than 2 nm was obtained for the device, which was limited by the short length of the SEHG segment. Potential for a DWDM channel spacing of 10 GHz is discussed.<>
Keywords :
III-V semiconductors; frequency division multiplexing; gallium arsenide; indium compounds; integrated optics; multiplexing equipment; optical harmonic generation; semiconductor junction lasers; 0.51 micron; CCD detector array; DWDM applications; IR; InGaAs-GaAs; Nd:YAG laser output; SQW laser; YAG:Nd; YAl5O12:Nd; active device; channel spacing; demultiplexer; dense wavelength-division-multiplexing; green surface-emitting light; interaction cross section; monolithic integration; multiwavelength signal source; nonlinear interactions; semiconductor laser diodes; single quantum-well; spatially separated signals; surface-emitting harmonic generator; system resolution; tunable Ti:sapphire laser; Gallium arsenide; Indium gallium arsenide; Laser theory; Optical coupling; Optical harmonic generation; Quantum well lasers; Surface emitting lasers; Testing; Tunable circuits and devices; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
