Microring-Based <formula formulatype="inline"><tex Notation="TeX">$N \times N$</tex></formula> Scalable Polymeric Electrooptic Routing Switch Array: Theory, Architecture, and Design Scheme

Abstract

Device architecture and design scheme of an N Â N scalable electrooptic (EO) routing switch array (RSA) are proposed using electric-field-induced EO polymeric microrings. The basic 2 Â 2 /cross/bar EO switching element is optimized under 1550-nm wavelength, and the ring radius is only 13.76 m with G 10 À4 dB/cm bending loss. The basic element reveals a free spectral range (FSR) of 17 nm, a switching voltage of 5 V, and response times of 70/140 ps, and the crosstalk under cross and bar states are about À28.8 and À39.9 dB, respectively. Using 2 Â 2 switching elements, 4 Â 4, 8 Â 8, 16 Â 16, and 32 Â 32 RSAs are presented, under all routing paths, their maximum insertion losses are 2.57, 5.19, 5.99 and 7.59 dB, respectively, and their maximum crosstalk are À28.7, À28.7, À26.27 and À25.07 dB, respectively. Universal structure, routing scheme, electrical/optical responses, and dynamic power consumption (PC) of N Â N RSA are then demonstrated, and dependence relations between routing performances and the RSA size N are achieved through data fitting.Comparisons with other reported passive/active routers/switches confirm that, due to superiority on fewer rings, picosecond faster response speed, zero static PC, and lower insertion loss and crosstalk, this polymer-based routing scheme can be a good candidate in on-chip optical systems.

Multifunctional Polymer Mach&#x2013;Zehnder Optical Switch/Filter Using Side-Coupled <inline-formula> <tex-math notation="TeX">$M\times N$</tex-math></inline-formula> Electrooptic Microring Array

“…Due to small dimensions (few "m  "m), ring resonator based devices can be densely integrated onto optoelectronic chips [10]- [13]. Therefore, the third kind of EO switch reported by our group is based on microring resonator (MRR) structure [14], [15], such as the MRR switch using two-group 2N þ 1 vertical-turning serial-coupled microrings and the grid-type routing switch matrix based on two-ring cross-coupling resonators.…”