Dynamics and Frequency Response of Microring-Based Optical Modulator Considering Nonlinear Effects

• Published in: Journal of lightwave technology Vol. 30; no. 23; pp. 3720 - 3726
• Main Authors: Mohammadi, F., Ahmadi, V., Gandomkar, M.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.12.2012; Institute of Electrical and Electronics Engineers
• Subjects: All optical circuits; All-optical modulation; Applied sciences; Circuit properties; coupling factor modulation; Electric, optical and optoelectronic circuits; Electronics; Exact sciences and technology; Finite difference methods; free-carrier (FC) plasma effect; Frequency response; Fundamental areas of phenomenology (including applications); Integrated optics. Optical fibers and wave guides; Laser optical systems: design and operation; microring resonator; Optical and optoelectronic circuits; Optical modulation; Optical resonators; Optical ring resonators; Optics; Physics; Resonators, cavities, amplifiers, arrays, and rings; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); two-photon absorption (TPA); GHz range; Refraction index; two-photon absorption (TPA); Frequency shift; Resonance frequency; Coupling factor; Frequency response; Two photon absorption; Optical modulation; Dynamic response; coupling factor modulation; Dynamic characteristic; Optical modulator; Finite difference time-domain analysis; All optical circuit; Free carrier; Ring resonator; Coupling coefficient; All-optical modulation; Waveguide junction; Timing; free-carrier (FC) plasma effect; Non linear effect; Intensity modulation; microring resonator

In this paper, we analyze dynamics and frequency response of GaAs-based microring modulators at the 1.55 μm using the finite-difference time-domain method. Two types of modulation are investigated: pump-probe configuration and modulation of the coupling coefficient. The pump-probe signals are tuned...