TY - JOUR
T1 - Analog and Digital High-speed modulation of Quantum-cascade laser
AU - Martini, Rainer
AU - Gmachl, Claire
AU - Paiella, Roberto
AU - Capasso, Federico
AU - Glazowski, Chris
AU - Murawski, Robert
AU - Whittaker, Edward A.
AU - Bethea, Clyde G.
AU - Hwang, Harold Y.
AU - Sivco, Deborah L.
AU - Baillargeon, James N.
AU - Cho, Alfred Y.
AU - Liu, H. C.
PY - 2003
Y1 - 2003
N2 - In this paper we present measured modulation responses on quantum-cascade lasers (QCL) up to 10 GHz. The obtained modulation response shows a flat response over the whole frequency range, proving the broadband capabilities of these devices. Even more striking is the absence of a strong resonance peak, which demonstrates the absence of relaxation oscillations, a feature which often limits the high speed performance of standard diode lasers. This property is quite attractive for use of these devices as high-speed data sources, particularly in applications where linearity is important. To address this possible application, the digital modulation properties of these devices were tested in a standard bit error-rate-measurement at 2.5 GBit/s for cryogenically cooled QCL, showing the suitability of QCLs in digital as well as analog telecommunication application. In addition we present recent data showing bit error measurements and eye diagrams obtained for the pulsed mode operation of QCL near room-temperature.
AB - In this paper we present measured modulation responses on quantum-cascade lasers (QCL) up to 10 GHz. The obtained modulation response shows a flat response over the whole frequency range, proving the broadband capabilities of these devices. Even more striking is the absence of a strong resonance peak, which demonstrates the absence of relaxation oscillations, a feature which often limits the high speed performance of standard diode lasers. This property is quite attractive for use of these devices as high-speed data sources, particularly in applications where linearity is important. To address this possible application, the digital modulation properties of these devices were tested in a standard bit error-rate-measurement at 2.5 GBit/s for cryogenically cooled QCL, showing the suitability of QCLs in digital as well as analog telecommunication application. In addition we present recent data showing bit error measurements and eye diagrams obtained for the pulsed mode operation of QCL near room-temperature.
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U2 - 10.1117/12.480193
DO - 10.1117/12.480193
M3 - Conference article
AN - SCOPUS:0141456350
SN - 0277-786X
VL - 4995
SP - 169
EP - 175
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
T2 - Novel In-Plane Semiconductor Lasers II
Y2 - 27 January 2003 through 29 January 2003
ER -