Continuously tunable multigigahertz repetition rate DFB laser pulsations

Herbert Burkhard; R. Loesch; Valeri Piataev; Winfried Schlapp; H. Schoell

doi:10.1117/12.271451

10 April 1997 Continuously tunable multigigahertz repetition rate DFB laser pulsations

Herbert Burkhard, R. Loesch, Valeri Piataev, Winfried Schlapp, H. Schoell

Proceedings Volume 3038, High-Speed Semiconductor Lasers for Communication; (1997) https://doi.org/10.1117/12.271451
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

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 (T_o equals 90 K). Comparison of characteristics showed the advantages of lasers with strain compensated MQWs.

Citation Download Citation

Herbert Burkhard, R. Loesch, Valeri Piataev, Winfried Schlapp, and H. Schoell "Continuously tunable multigigahertz repetition rate DFB laser pulsations", Proc. SPIE 3038, High-Speed Semiconductor Lasers for Communication, (10 April 1997); https://doi.org/10.1117/12.271451

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