Topic
Semiconductor optical gain
About: Semiconductor optical gain is a research topic. Over the lifetime, 5997 publications have been published within this topic receiving 96505 citations.
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TL;DR: Numerically the synchronization of external-cavity semiconductor lasers in a master-slave configuration, based on a Lang-Kobayashi-type model, is studied, showing that these two types of synchronization present different robustness with respect to the noise, frequency detuning, and current modulation of the master laser.
Abstract: We study numerically the synchronization of external-cavity semiconductor lasers in a master-slave configuration, based on a Lang-Kobayashi-type model. Depending on the feedback and coupling strengths, the slave laser synchronizes with the injected optical field or with the injected field but lags in time. We show that these two types of synchronization present different robustness with respect to the noise, frequency detuning, and current modulation of the master laser.
37 citations
Patent•
26 Sep 1989TL;DR: In this paper, a semiconductor laser array including a plurality of semiconductor lasers each having an active layer having a quantum well structure with at least two quantum levels is defined, which is called disclosed.
Abstract: Disclosed is a semiconductor laser array including a plurality of semiconductor lasers each having an active layer having a quantum well structure with at least two quantum levels. The semiconductor lasers have reflecting means having different wavelength selection properties.
37 citations
Patent•
12 May 1998TL;DR: In this article, a semiconductor laser and an optical waveguide of an optical coupler, formed on a substrate, are optically coupled with each other by aligning their positions horizontally by using a plurality of laser elements and cores for the laser and the waveguide respectively and arranging them in an array respectively.
Abstract: A semiconductor laser and an optical waveguide of an optical coupler, formed on a substrate are optically coupled with each other by aligning their positions horizontally by using a plurality of laser elements and cores for the laser and the waveguide respectively and arranging them in an array respectively so that a difference between their pitches is less than double of tolerance tolerated for optically coupling with each other, the waveguide having partially a composite core composed of: a main core; a sub core surrounding the main core and having a refractive index lower than that of the main core; and a cladding layer surrounding the sub core and having a refractive index lower than that of the sub core.
37 citations
TL;DR: In this paper, an intrinsic equivalent circuit of quantum-well lasers that takes the capture of carriers into the quantum well into account is presented, and several qualitative features in the modulation response and the device impedance are revealed.
Abstract: An intrinsic equivalent circuit of quantum-well lasers that takes the capture of carriers into the quantum well into account is presented. Several qualitative features in the modulation response and the device impedance are revealed. The dependences on the carrier capture and escape rates are discussed. >
37 citations
TL;DR: In this article, the dynamic characteristics of a gain saturated semiconductor laser amplifier with 1.47/spl mu/m pump light are described, and the pump light injection shortens the gain response time.
Abstract: The dynamic characteristics of a gain saturated semiconductor laser amplifier with 1.47-/spl mu/m pump light are described. In addition to improving the saturation output power, the pump light injection shortens the gain response time. Bit-error-rate measurements show that signal degradation, induced for a high-bit-rate signal amplified under the gain saturated condition, becomes less with the pump light injection.
37 citations