Microresonators for Integrated Optical Devices

B. Little, H. Haus, E. Ippen, G. Steinmeyer, E. Thoen, J. Foresi, L. Kimerling, Sai T. Chu, W. Greene

Resonators have frequency selective properties that make them particularly suitable for optical signal processing. By cascading coupled resonators in different configurations, it is possible to synthesize a wide variety of desirable optical filter characteristics. Significantly, resonators behave as lumped elements, tuning as a unit. This is to be contrasted with many interferometric devices in which the details of the device shape are critical to the performance, e.g., in apodized evanescently coupled waveguide filters. Other novel resonator applications for integrated optics, not achievable with conventional devices, include absorption controlled WDM signal routing.

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