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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 34,
  • Issue 14,
  • pp. 3466-3472
  • (2016)

A Wavelength Tunable Optical Buffer Based on Self-Pulsation in an Active Microring Resonator

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Abstract

A wavelength tunable optical buffer with the ability to achieve data recovery based on self-pulsation in an active microring resonator is proposed and experimentally demonstrated. The key component in the optical buffer is the microring resonator which is implemented based on an InP–InGaAsP material system incorporating two semiconductor optical amplifiers and a phase modulator, ensuring an ultrahigh Q-factor and a tunable resonance wavelength for fast self-pulsation operating at gigahertz frequencies. An optical carrier modulated by an arbitrary pulse sequence is used to trigger the self-pulsation in the microring resonator, while its output is coupled to a fiber-optic delay line in an optoelectronic delayed feedback configuration, a recursive system for data storage. Optical buffering and data recovery at 1 Gb/s are experimentally demonstrated, which is the fastest optical buffer ever reported based on self-pulsation in a microring resonator. The proposed optical buffer can be employed to perform critical telecommunication buffer functions including writing, storage, reshaping, healing, and erasing.

© 2016 IEEE

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