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We present an efficient method to model the small- signal modulation response of a long-wavelength VCSEL chip using an equivalent electrical circuit. This circuit serves two distinct purposes. Based on T-matrix formalism, it is used to remove the parasitics contribution originating from the electrical access of the chip in order to obtain the optical cavity intrinsic frequency response as defined...
In this present work, we propose a new method to remove the parasitics contribution to the VCSEL chip response, in order to obtain the intrinsic transmission behavior. It has been observed that the S11 reflection coefficient of the chip is only due to the electrical access to the chip composed by the transmission line and cavity contacts. This allows us to decompose the chip into two cascaded subsystems...
GaInNAs-based 1240 nm laser diodes are realized with internal losses as low as 0.5 cm-1 allowing maximum output powers of 9 W at room temperature under continuous-wave operation. Wavelength stabilized tapered laser diodes show output powers of 1W and M2 down to 1.4 demonstrating potential for pumping applications.
Two types of supermode noise, uncorrelated and correlated, are demonstrated for two different types of harmonically modelocked lasers. The correlated supermode noise is originated from the excitation of multiple correlated optical supermodes.
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