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For the application requirements of resonant micro-cavity, an original three-ring resonant micro-cavity structure is proposed in this paper. Like electromagnetically induced transparency in an atomic system, the coupled resonator-induced transparency (CRIT) phenomenon in a new optical micro-cavity system is proven experimentally. Up to now, most of the resonators based on CRIT are just in the theoretical exploration stage, and the analysis of the double-ring structure has been relatively common. The CRIT effect of a resonator has a significant relationship with the coupler insertion loss, the ring circumference, and the multiples of the rings, which need high requirements in the structural design and preparation process. In order to reduce the difficulty in design and preparation, we propose a new three-ring cascade resonator structure with the same cavity size on silicon. According to the transfer matrix method and coupled mode theory, we find a CRIT effect after theoretical analysis. Our devices are fabricated on an SOI wafer. By using the micro-cavity measurement platform to repeat and analyze the tests of single ring and three-ring cascade resonator structure, we obtain a grating coupler efficiency of 30%. By applying the antireflection coating, the coupling efficiency of the grating coupler is up to 34%. During the test, the mutual interference between annular cavities of the three-ring resonators produces two transmission peaks, the output spectrum of the resonator with a narrow transparency peak at a low group velocity, which is verified in CRIT phenomenon. Compared with the traditional single-ring structure, the resonator has a quality factor increasing four times, reaching a value of up to 0.65×105, the through and drop transmission spectra of the resonator are reconciled well with each other. At the same time, in order to obtain the sensitivity of the resonator to temperature, we conduct tuning tests of the resonator temperature characteristics, the resonant peak is moved to the large wavelength direction with temperature increasing, and detuning wavelength of the resonance can be controlled by changing temperature, which is called red-shift. Therefore, the original three-ring cascaded resonators have significant applications in the rotation sensing, optical filters, optical storage and temperature sensing elements.
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Keywords:
- coupled resonator-induced transparency /
- three-ring resonator /
- coupling efficiency /
- quality factor
[1] Smith D D, Chang H, Fuller K A, Rosenberger A, Boyd R W 2004 Phys. Rev. A 69 063804
[2] Oishi T, Suzuki R, Sultana P, Tomita M 2012 Opt. Lett. 37 2964
[3] Xu Q, Sandhu S, Povinelli M L, Shakya J, Fan S, Lipson M 2006 Phys. Rev. Lett. 96 123901
[4] Xu Q, Shakya J, Lipson M 2006 Opt. Express 14 6463
[5] Totsuka K, Kobayashi N, Tomita M 2007 Phys. Rev. Lett. 98 213904
[6] Naweed A, Farca G, Shopova S, Rosenberger A 2005 Phys. Rev. A 71 043804
[7] Ren G H, Chen S W, Cao T T 2012 Acta Phys. Sin. 61 034215 (in Chinese) [任光辉, 陈少武, 曹彤彤 2012 61 034215]
[8] Cao T T, Zhang L B, Fei Y H, Cao Y M, Lei X, Chen S W 2013 Acta Phys. Sin. 62 194210 (in Chinese) [曹彤彤, 张利斌, 费永浩, 曹严梅, 雷勋, 陈少武 2013 62 194210]
[9] Xiong K, Xiao X, Hu Y T, Li Z Y, Chu T, Yu Y D, Yu J Z 2012 Chin. Phys. B 21 074203
[10] Wang N, Zhang Y D, Yuan P 2011 Chin. Phys. B 20 044203
[11] Zhang Y, Wang N, Tian H, Wang H, Qiu W, Wang J, Yuan P 2008 Phys. Lett. A 372 5848
[12] Totsuka K, Tomita M 2007 Opt. Lett. 32 3197
[13] Lee H, Chen T, Li J, Painter O, Vahala K J 2012 Nat. Commun. 3 867
[14] Tang Y H, Lin Y H, Chen P L, Shiao M H, Hsiao C N 2014 Micro. Nano Lett. 9 395
[15] Xiao S, Khan M H, Shen H, Qi M 2007 Opt. Express 15 10553
[16] Vlasov Y, McNab S 2004 Opt. Express 12 1622
[17] Maleki L, Matsko A, Savchenkov A, Ilchenko V 2004 Opt. Lett. 29 626
[18] Li X, Wang L N, Guo S L, Li Z Q, Yang M 2014 Acta Phys. Sin. 63 154209 (in Chinese) [李欣, 王禄娜, 郭士亮, 李志全, 杨明 2014 63 154209]
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[1] Smith D D, Chang H, Fuller K A, Rosenberger A, Boyd R W 2004 Phys. Rev. A 69 063804
[2] Oishi T, Suzuki R, Sultana P, Tomita M 2012 Opt. Lett. 37 2964
[3] Xu Q, Sandhu S, Povinelli M L, Shakya J, Fan S, Lipson M 2006 Phys. Rev. Lett. 96 123901
[4] Xu Q, Shakya J, Lipson M 2006 Opt. Express 14 6463
[5] Totsuka K, Kobayashi N, Tomita M 2007 Phys. Rev. Lett. 98 213904
[6] Naweed A, Farca G, Shopova S, Rosenberger A 2005 Phys. Rev. A 71 043804
[7] Ren G H, Chen S W, Cao T T 2012 Acta Phys. Sin. 61 034215 (in Chinese) [任光辉, 陈少武, 曹彤彤 2012 61 034215]
[8] Cao T T, Zhang L B, Fei Y H, Cao Y M, Lei X, Chen S W 2013 Acta Phys. Sin. 62 194210 (in Chinese) [曹彤彤, 张利斌, 费永浩, 曹严梅, 雷勋, 陈少武 2013 62 194210]
[9] Xiong K, Xiao X, Hu Y T, Li Z Y, Chu T, Yu Y D, Yu J Z 2012 Chin. Phys. B 21 074203
[10] Wang N, Zhang Y D, Yuan P 2011 Chin. Phys. B 20 044203
[11] Zhang Y, Wang N, Tian H, Wang H, Qiu W, Wang J, Yuan P 2008 Phys. Lett. A 372 5848
[12] Totsuka K, Tomita M 2007 Opt. Lett. 32 3197
[13] Lee H, Chen T, Li J, Painter O, Vahala K J 2012 Nat. Commun. 3 867
[14] Tang Y H, Lin Y H, Chen P L, Shiao M H, Hsiao C N 2014 Micro. Nano Lett. 9 395
[15] Xiao S, Khan M H, Shen H, Qi M 2007 Opt. Express 15 10553
[16] Vlasov Y, McNab S 2004 Opt. Express 12 1622
[17] Maleki L, Matsko A, Savchenkov A, Ilchenko V 2004 Opt. Lett. 29 626
[18] Li X, Wang L N, Guo S L, Li Z Q, Yang M 2014 Acta Phys. Sin. 63 154209 (in Chinese) [李欣, 王禄娜, 郭士亮, 李志全, 杨明 2014 63 154209]
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