An ultra-compact cross/bar optical routing switch using two polymer electro-optic microrings

• Published in: Optoelectronics letters Vol. 9; no. 5; pp. 337 - 341
• Main Author: 宋强 郑传涛 梁磊 罗倩倩 马春生 张大明 王一丁
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.09.2013
• Subjects: Lasers; Optical Devices; Optics; Photonics; Physics; Physics and Astronomy; 光电开关; 微环; 电光; 紧凑型; 聚合物; 路由交换机; 通道波导; 酒吧; Insertion Loss; Core Width; Channel Waveguide; Coupling Point; Switching Voltage
• ISSN: 1673-1905; 1993-5013
• DOI: 10.1007/s11801-013-3072-9

A 2×2 cross/bar polymer electro-optic （EO） routing switch is＇ proposed, which is composed of two passive channel waveguides and two active EO polymer microrings with bending radius of only 13.76μm. Detailed structure, theory and formulation are provided to characterize the output power of the switch. For obtaining fundamental mode propagation, small bending loss and phase-matching between channel waveguide and microring resonator （MRR） waveguide, the structural parameters are optimized under the wavelength of 1550 nm. Analyses and simulations on output power and output spectra indicate that a switching voltage of 5 V is desired to realize the exchange between cross state and bar state, the crosstalk under cross state and that under bar state are about -28.8 dB and -39.9 dB, respectively, and the insertion losses under these two states are about 2.42 dB and 0.13 dB, respectively. Compared with our four EO switches reported before, this device possesses ultra-compact size of 0.233 mm×0.233 mm as well as low crosstalk and insertion loss, and therefore it can serve as a good candidate for constructing large-scale optical routers or switching arrays in photonic network-on-chip （NoC）.