Abstractanalytical expressions for the amplitude, frequency, timing, and carrier phase noise of modelocked laser diodes. Numerical simulation predicts that semiconductor mode locked lasers have very complex structure in the transfer function which is confirmed experimentally by corresponding noise measurements. Pdf modelocked semiconductor lasers for optical communication. Mode hopping causes variations in the location of data written to the optical disk because dispersion causes variations in beam direction. It is found both experimentally and theoretically that carrier dynamics contribute to the total noise of mllds. Ultrashort, high power, and ultralow noise modelocked. Noise transfer functions of modelocked semiconductor laser. This represents the lowest timing jitter reported so far for mode locked semiconductor lasers, thereby confirming the importance of qd materials in the pursuit of low noise pulsed laser. Noise of modelocked semiconductor lasers request pdf. The noise in harmonically modelocked semiconductor lasers is also discussed, and it is shown that the correlations in the noise of different pulses inside the laser cavity can significantly.
Phase noise in actively mode locked semiconductor lasers, j. The noise behavior of mode locked semiconductor ring laser, including timing jitter, and pulse energy fluctuation are investigated using the notion of a noise transfer function. Noise of modelocked semiconductor lasers ieee xplore. Pdf we present investigations on 10 and 40 ghz monolithic modelocked. Semiconductor vertical external cavity modelocked lasers have also. Relative intensity noise of modelocked fiber grating. The noise in harmonically mode locked semiconductor lasers is also discussed, and it is shown that the correlations in the noise of different pulses inside the laser cavity can significantly. On phase noise of selfinjection locked semiconductor lasers. Motivation for concern about mode hopping mode hopping in semicondu ctor lasers is undesirable in many applications since it introduces unwanted intensity noise. The phase noise of the locked lasers can be much smaller as compared with the noise shown in fig. Noise of modelocked semiconductor lasers ieee journals.
Express 12 052002 view the article online for updates and enhancements. Analytical expressions for the amplitude, frequency, timing, and carrier phase noise of mode locked laser diodes mllds are derived. Recent citations improved noise characteristics of mutually injection locked semiconductor lasers in a weak coupling regime xu. Keywords optoelectronic devices, modelocked lasers, semiconductor lasers. Frequency noise performance improvement of mutually injection locked semiconductor lasers to cite this article. Pdf the development of modelocked semiconductor disk lasers received striking. The resonant rayleigh backscattering was used i to lock the laser to a mode of a wgmr, resulting in significant reduction of the laser phase noise, and ii, to transfer frequency modulation. Relative intensity noise of mode locked fiber grating external cavity semiconductor lasers. Pdf effects of noise on transients of injection locked. Pdf selfmodelocking semiconductor disk laser researchgate. The noise in harmonically mode locked semiconductor lasers is also discussed, and it is shown that the correlations in the noise of different pulses inside the laser cavity can significantly affect the results when the pulse noise is measured experimentally.