Self-suppression effect of longitudinal spatial hole burning in absorptive-grating gain-coupled DFB lasers

Self-suppression effect of longitudinal spatial hole burning in absorptive-grating gain-coupled DFB lasers

Longitudinal spatial hole burning (LSHB) induces degradation of longitudinal-mode stability in distributed-feedback (DFB) lasers. Measurement of frequency modulation characteristics has revealed that, in absorptive-grating gain-coupled DFB lasers, the LSHB diminishes as power increases. This anomalo...

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Veröffentlicht in:IEEE photonics technology letters 1993-11, Vol.5 (11), p.1276-1278
Hauptverfasser: Sudoh, T.K., Nakano, Y., Tada, K., Kikuchi, K., Hirata, T., Hosomatsu, H.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption
Degradation
Exact sciences and technology
Frequency measurement
Frequency modulation
Fundamental areas of phenomenology (including applications)
Gain measurement
Gratings
Laser stability
Laser theory
Lasers
Optics
Physics
Power lasers
Power measurement
Semiconductor lasers
laser diodes
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Zusammenfassung:Longitudinal spatial hole burning (LSHB) induces degradation of longitudinal-mode stability in distributed-feedback (DFB) lasers. Measurement of frequency modulation characteristics has revealed that, in absorptive-grating gain-coupled DFB lasers, the LSHB diminishes as power increases. This anomalous behavior has been qualitatively explained by a theoretical analysis that took into account the saturable nature of the absorption of the gain-coupled grating. This LSHB suppression effect is advantageous for high-power single-longitudinal-mode operation of DFB lasers.< >
ISSN:1041-1135
1941-0174
DOI:10.1109/68.250043