Novel compact SOI-based reconfigurable optical add/drop multiplexer using microring resonators

Peng Chen; Qing Fang; Chunxia Wang; Minming Geng; Fang Li; Yuliang Liu

doi:10.1117/12.635982

5 December 2005 Novel compact SOI-based reconfigurable optical add/drop multiplexer using microring resonators

Peng Chen, Qing Fang, Chunxia Wang, Minming Geng, Fang Li, Yuliang Liu

Proceedings Volume 6019, Passive Components and Fiber-based Devices II; 60190L (2005) https://doi.org/10.1117/12.635982
Event: Asia-Pacific Optical Communications, 2005, Shanghai, China

Abstract

Novel compact design for 4-channel SOI-based reconfigurable optical add/drop multiplexer using microring resonators is presented and analyzed. Microring resonators have two important attributes as a key new technology for future optical communications, namely functionality and compactness. Functionality refers to the fact that a wide range of desirable filter characteristics can be synthesized by coupling multiple rings. Compactness refers the fact that ring resonators with radii about 30μm can lead to large scale integration of devices with densities on the order of 104 - 105 devices per square centimeter. A 4-channel reconfigurable optical add/drop multiplexer comprises a grid-like array of ridge waveguides which perpendicularly cross through each other. SOI-based resonators consisted of multiple rings at each of the cross-grid nodes serve as the wavelength selective switch, and they can switch an optical signal between two ports by means of tuning refractive index of one of the rings. The thermo-optic coeffcient of silicon is 1.86×10-4/K. Thus a temperature rise of 27K will increase the refractive index by 5×10-3, which is enough to cause the switching of our designed microring resonators. The thermo-optic effect is used to suppress the resonator power transfer, rather than to promote loss. Thus, the input signal only suffers small attenuation and simultaneously low crosstalk can be achieved by using multiple rings.

Citation Download Citation

Peng Chen, Qing Fang, Chunxia Wang, Minming Geng, Fang Li, and Yuliang Liu "Novel compact SOI-based reconfigurable optical add/drop multiplexer using microring resonators", Proc. SPIE 6019, Passive Components and Fiber-based Devices II, 60190L (5 December 2005); https://doi.org/10.1117/12.635982

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