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A novel method for determination of the maximum stable feedback level in laser diodes
Author(s) -
Pierce Iestyn,
Rees Paul,
Spencer Paul S.,
Alan Shore K.
Publication year - 2001
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.417
Subject(s) - diode , laser , relative intensity noise , noise (video) , semiconductor laser theory , plane (geometry) , instability , modulation (music) , control theory (sociology) , laser diode , stability (learning theory) , optics , physics , microwave , semiconductor , intensity (physics) , computer science , mathematics , optoelectronics , acoustics , mechanics , quantum mechanics , geometry , control (management) , artificial intelligence , machine learning , image (mathematics)
Abstract A simple method is presented for determining the minimum feedback level required for the onset of instability and chaos in semiconductor laser diodes. Using this method, the positions of the pair of dominant system poles in the s ‐plane are found for varying levels of feedback. This analysis determines the feedback level required to send the system unstable. The results are applicable for both long and short external cavities. The method is ideally suited to the prediction of system stability from measurements of microwave modulation response or relative intensity noise (RIN) spectrum, since it only requires knowledge of the natural frequency and damping frequency of the dominant s ‐plane poles of the laser diode without optical feedback. Copyright © 2001 John Wiley & Sons, Ltd.