Optimisation of an asymmetric three phase-shift distributed feedback semiconductor laser
نویسندگان
چکیده
منابع مشابه
Sideband locking of a single-section semiconductor distributed-feedback laser in an optical phase-lock loop.
The bandwidth and performance of optical phase-lock loops (OPLLs) using single-section semiconductor lasers (SCLs) are severely limited by the nonuniform frequency modulation response of the lasers. It is demonstrated that this restriction is eliminated by the sideband locking of a single-section distributed-feedback SCL to a master laser in a heterodyne OPLL, thus enabling a delay-limited loop...
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A new integrated optical sensor chip is proposed, based on a modified distributedfeedback (DFB) semiconductor laser. The semiconductor layers of different refractive indices that comprise a laser form the basis of a waveguide sensor, where changes in the refractive index of material at the surface are sensed via changes in the evanescent field of the lasing mode. In DFB lasers, laser oscillatio...
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The effect of phase-conjugate feedback on the dynamic response of semiconductor lasers is studied by using a rate-equation approach. The steady state exists only for certain well-defined values of the phase of the intracavity optical field. Depending on the amount of phase-conjugate feedback, the steady state becomes unstable through two independent instabilities, referred to as fold and Hopf i...
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This paper presents the experimental observation of the degradation in asymmetric sampled grating DFB lasers by the accelerated life tests. Two degradation phenomena related to the electrical characteristics of LDs are observed during the tests. The first degradation phenomenon by increasing the reverse current is considered as a formation of leakage current path enough to prevent lasing operat...
متن کاملFeedback phase sensitivity of a semiconductor laser subject to filtered optical feedback: experiment and theory.
We investigate experimentally and theoretically the dynamics of a semiconductor laser subject to filtered optical feedback. Depending on the feedback strength we find dynamical regimes with different dependence on the feedback phase. In particular, the influence of the feedback phase on cw emission and on frequency oscillations is characterized experimentally. We also measure the dependence of ...
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ژورنال
عنوان ژورنال: The European Physical Journal Applied Physics
سال: 2009
ISSN: 1286-0042,1286-0050
DOI: 10.1051/epjap/2009068