10 April 1997 Continuously tunable multigigahertz repetition rate DFB laser pulsations
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The generation of short optical pulses with a repetition rate up to 45 GHz has been realized by using a new method based on cw-light injection from one DFB into another cw operated DFB-laser with a proper frequency detuning. Extremely high extinction ratios of the pulsations could be controlled by two parameters: detuning and injection ratio. An optimized construction of the DBF-laser with respect to single-mode output power has been utilized. Two laser structures with ternary compressively strained In70Ga30As/In53Al23Ga24As/InP and quaternary strain compensated In71Al9Ga20As/In34Al21Ga45As/InP multiquantum wells (MQW), respectively, provided very high speed in combination with high (greater than 20 mW) output power, low threshold current (less than 8 mA) and low temperature sensitivity (To equals 90 K). Comparison of characteristics showed the advantages of lasers with strain compensated MQWs.
© (1997) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Herbert Burkhard, R. Loesch, Valeri Piataev, Winfried Schlapp, H. Schoell, "Continuously tunable multigigahertz repetition rate DFB laser pulsations", Proc. SPIE 3038, High-Speed Semiconductor Lasers for Communication, (10 April 1997); doi: 10.1117/12.271451; https://doi.org/10.1117/12.271451


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