Abstract

Mode-locked lasers produce short regular pulses suitable for interleaving after modulation in optically time division multiplexed systems. However, they require a long cavity outside the gain region. Early devices used bulk optical components to form the cavity.¹ Recently, fiber and silicon waveguide resonators were demonstrated.^2,3 However, integrated devices, including both the resonator and gain region (Fig. 1) could lower costs, increase mechanical stability, and improve performance.⁴

© 1990 Optical Society of America