Nested fiber ring resonator enhanced Mach-Zehnder interferometer for temperature sensing.

We numerically investigate the properties of the nested fiber ring resonator coupled Mach-Zehnder interferometer as a sensor. By introducing the phase bias of 0.5π in the reference arm, the two output intensities exhibit sharp asymmetric line shapes around the resonance wavelength. Utilizing the intensity interrogation, we analyze the effect of parameters on the sensitivity and the detection limit. For the 30 dB signal-noise system, the sensitivity and the detection limit can achieve 4.0866/°C and 7.341×10(-3)°C, respectively; the results indicate that this structure is suitable for high-sensitivity measurements.

[1]  Chung-Yen Chao,et al.  Design and optimization of microring resonators in biochemical sensing applications , 2006, Journal of Lightwave Technology.

[2]  Pieter Dumon,et al.  Nested-Ring Mach–Zehnder Interferometer in Silicon-on-Insulator , 2008 .

[3]  C. Wieman,et al.  Frequency-stabilized diode laser with the Zeeman shift in an atomic vapor. , 1998, Applied optics.

[4]  Chung-Yen Chao,et al.  Biochemical sensors based on polymer microrings with sharp asymmetrical resonance , 2003 .

[5]  Xuenan Zhang,et al.  Enhancing the sensitivity of fiber Mach-Zehnder interferometers using slow and fast light. , 2011, Optics letters.

[6]  Sailing He,et al.  Highly sensitive sensor based on an ultra-high-Q Mach-Zehnder interferometer-coupled microring , 2009 .

[7]  M. K. Chin,et al.  Nested-ring Mach–Zehnder interferometer , 2007, Optics express.

[8]  K. Sooley,et al.  Tapered fiber Mach–Zehnder interferometer for simultaneous measurement of refractive index and temperature , 2009 .

[9]  Xianshu Luo,et al.  Electro-optical tunable time delay and advance in a silicon feedback-microring resonator. , 2011, Optics letters.

[10]  Linjie Zhou,et al.  Fano resonance-based electrically reconfigurable add-drop filters in silicon microring resonator-coupled Mach-Zehnder interferometers. , 2007, Optics letters.

[11]  Jianquan Yao,et al.  Tunable asymmetrical Fano resonance and bistability in a microcavity-resonator-coupled Mach-Zehnder interferometer. , 2005, Optics letters.

[12]  Jian Ju,et al.  Photonic bandgap fiber tapers and in-fiber interferometric sensors. , 2009, Optics letters.

[13]  E. Black.  An introduction to Pound–Drever–Hall laser frequency stabilization , 2001 .

[14]  M. Lipson,et al.  Minimizing temperature sensitivity of silicon Mach-Zehnder interferometers. , 2010, Optics express.

[15]  Shanhui Fan,et al.  Ring-coupled Mach-Zehnder interferometer optimized for sensing. , 2009, Applied Optics.

[16]  G. Hocker.  Fiber-optic sensing of pressure and temperature. , 1979, Applied optics.