Title :
Temporal wavelength multiplexing of a Quantum Cascade laser
Author :
Toor, Fatima ; Sivco, Deborah L. ; Gmachl, Claire F.
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., Princeton, NJ
Abstract :
A bi-directional and multi-wavelength Quantum Cascade (QC) laser based system is presented that is both time and wavelength multiplexed, that is, it can emit two widely different wavelengths, at two alternate time slots. The QC laser source emits at 10.8 mum wavelength for positive polarity current and 8.6 mum for negative polarity current. A diode based adder circuit was designed to drive the QC laser such that it added the two opposite polarity current pulses with a variable time delay. Versatile multi-wavelength and time multiplexed QC laser light signals with time delays of 0.5 s to 2.5 mus were obtained.
Keywords :
delays; quantum cascade lasers; wavelength division multiplexing; adder circuit; bi-directional quantum cascade laser; diode; multi-wavelength quantum cascade laser; temporal wavelength multiplexing; time 0.5 mus to 2.5 mus; wavelength 10.8 mum; wavelength 8.6 mum; Adders; Bidirectional control; Circuits; Delay effects; Gas lasers; Optical design; Optical interferometry; Quantum cascade lasers; Semiconductor lasers; Stimulated emission; Multi-wavelength; bi-directional; quantum cascade laser; temporal multiplexing;
Conference_Titel :
Indium Phosphide & Related Materials, 2009. IPRM '09. IEEE International Conference on
Conference_Location :
Newport Beach, CA
Print_ISBN :
978-1-4244-3432-9
Electronic_ISBN :
1092-8669
DOI :
10.1109/ICIPRM.2009.5012481
