Abstract
Effect of spontaneous noise on mode-locked hybrid soliton pulse source (HSPS) utilizing linearly chirped fiber Bragg grating is described by couple-mode equations including spontaneous emission noise. Relative intensity noise (RIN) of mode-locked HSPS is given for different linewidth enhancement factors and spontaneous coupling factors to show the effect of these parameters on RIN and output pulse of HSPS. For large values of these parameters, proper mode-locked is difficult to achieve because of increasing RIN and therefore transform-limited pulses are not generated over a wide frequency range whereas transform-limited pulses are generated over a wide frequency range with low RIN. RIN is also extremely sensitive to the r.f. and d.c. currents.
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