Article ID Journal Published Year Pages File Type
1535043 Optics Communications 2013 10 Pages PDF
Abstract
Universal model and investigation are proposed for a novel 2×2 polymer electro-optic (EO) switch based on two-group 2N+1 vertical-turning series-coupled microrings. For realizing boxlike spectrum (drop port) as well as low crosstalk and insertion loss, resonance order and coupling gaps are optimized. The microring resonator (MRR) switches with N≥1 reveal favorable boxlike flat spectrum as when compared with the simple device with only one microring (N=0), and 1≤N≤5 is required for obtaining <∼5 dB insertion loss under cross state (U=0 V). For the five MRR switches (N=1-5), the free-spectrum range (FSR) is ∼12 nm (∼1500 GHz), the switching voltage is about 4.0 V, their crosstalk are <−51 dB under cross state and <−28.2 dB under bar state, and their insertion losses are <5.12 dB under cross state and <0.24 dB under bar state. The devices also have ultra-compact footprint size of 0.325-0.652 mm, which is only 1/10-1/5 of those of our previously reported polymer EO switches based on directional coupler (DC) or Mach-Zehnder interferometer (MZI) structures. Consequently, the proposed switching element can be highly integrated onto optoelectronic chips for constructing large switching arrays.
Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
Authors
, , , , ,