A compact cascaded microring filter with two master rings and two slave rings for sensing application

Abstract

In this paper, an ultra compact cascaded microring filter consisting of two master rings with radius of 2.5 μm and two slave rings with radius of 1 μm is presented and studied theoretically. The filter with a very large free spectral range (FSR) of 206 nm, a deep extinction ratio of 23 dB, a high quality factor of 2.76×10⁵, and greatly suppressed spurious modes of less than 0.1 dB is achieved. The spectral responses of the filter are simulated by transfer matrix method, and the results show that this filter has a great potential of sensor application.

Keywords

Coupling Coefficient / Ring Group / Output Spectrum / Extinction Ratio / Transfer Matrix Method

References

[1] JiangH, WuY. Journal of Optoelectronics ·Laser, 2011, 22: 813

[2] WangW, ZhangA, YangK, HuangZ, shijuanF, WangY. Ultracompact SOI Microring Add Drop Filter with Extra-Wide FSR for Silicon Photonic ApplicationSymposium on Photonics and Optoelectronics, 2012, 1

[3] FanZ, YunB, HuG, YanY, CuiY. Journal of Optoelectronics·Laser, 2012, 23: 1727

[4] DongP, ShafiihaR, LiaoS, LiangH, FengN-N, LiG, ZhengX. Optics Express, 2010, 18: 10941

[5] TangJ, JinY, ChangZ, ChenX, YeT. Opt. Eng., 2011, 50: 094002

[6] YangL, JiR, ZhangL, DingJ, XuQ. Optics Express, 2012, 20: 13560

[7] LuchanskyM S, BaileyR C. Analytical Chemistry, 2012, 84: 793

[8] OrghciR, LützowP, BurgmeierJ, KochJ, HeidrichH, SchadeW, WelschoffN, WaldvogelS. Sensors, 2010, 10: 6788

[9] YiH, CitrinD S, ZhouZ. IEEE Journal of Quantum Electronics, 2011, 47: 354

[10] BogaertsW, De HeynP, VaerenberghT V, De VosK, SelvarajaS K, ClaesT, DumonP, BienstmanP, Van ThourhoutD, BaetsR. Laser Photonics Reviews, 2012, 6: 47

[11] WangJ, HeS, DaiD. Silicon-nanowire-based Optical Sensor by using Mach-Zehnder Interferometer Coupled MicroringAsia Communications and Photonics Conference and Exhibition, 2010, 322

[12] DaiD, HeS. J. Opt. Soc. Am. B, 2009, 26: 511

[13] XuQ, FattalD, BeausoleilR G. Optics Express, 2008, 16: 4309

[14] FengJ, LiQ, ZhouZ. IEEE Photonics Technology Letters, 2011, 23: 79

[15] LuY, FuX, ChuD, WenW, YaoJ. Optics Communications, 2011, 284: 476

[16] YeboN A, LommensP, HensZ, BaetsR. Optics Express, 2010, 18: 11859

[17] XuE, ZhangX, ZhouL, ZhangY, YuY, LiX, HuangD. Optics Letters, 2010, 35: 1242