The refractive index sensor of the SMF covered by nanodiamond layer

Document Type : Reasearch Paper

Authors

• Marzieh Naddafan ¹
• Javid Zamir Anvari ¹
• Azadeh Ahmadian ²
• Zahra Reyhani Clor ¹

¹ Department of Physics, Faculty of Science, Shahid Rajaee Teacher Training University, Tehran, P. O. Box 16788-15811, I. R. Iran.

² Department of Physics, Faculty of Science, Tarbiat Modares University, Tehran, P. O. Box 14115-175, I. R. Iran.

10.22034/ijnd.2022.685458

Abstract

This study evaluated the light transmission characteristics of a single modular fiber with a cylindrical microchannel using the FDTD method. To this end, various microchannel diameters (4-11μm) were explored. The SMF included a silica core (n=1.4) coated by a nanodiamond layer with a refractive index of 2.42. The impact of Fabry-Perot resonance was evidently detected in transmission features. At constant , the light transmission variations depended on the refractive index of the microchannel. A significant change was observed in the upon altering the microchannel refractive index. Based on the results, a microchannel-based SMF with different diameters can be employed for refractive index sensing. In the cases where the diameter of the microchannel largely differs from that of the core (8μm), the transmission variations were negligible. The numerical results are in good agreement with those reported in the microhole or microchannel experiment. The highest and lowest transmissions were recorded for the microchannel at diameters of 4 and 11μm, respectively. Comparing related experimental and numerical results show proper control of the microchannel diameter can enhance light transmission through the core-microchannel. The sensitivity of the refractive index to the microchannel diameter is a promising feature that can be exploited for developing various fiber optical devices.

Keywords

• FDTD
• Fiber Optics
• Nanodiamond
• Refractive Index
• Sensors
• Transmission

20.1001.1.20088868.2022.13.1.7.9

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References

[1] Beitollahi H., Safaei M., Tajik S., (2019), Application of Graphene and Graphene Oxide for modification of electrochemical sensors and biosensors: A review. Int. J. Nano Dimens. 10: 125-140.

[2] Girigoswami K., Akhtar N., (2019), Nanobiosensors and fluorescence based biosensors: An overview. Int. J. Nano Dimens. 10: 1-17.

[3] Tariyal B. K., Cherin, A. H., (2003), Optical fiber communications. In R. Meyers (Ed.), Encyclopedia of Physical Science and Technology.

[4] Tian Y., Wang W., Wu N., Zou X., Wang X., (2011), Tapered optical fiber sensor for label-free detection of biomolecules. Sensors. 11: 3780-3790.

[5] Yousefi E., Hatami M., (2020), A numerical method for pulse propagation in nonlinear fiber Bragg grating with ternary stability nature. Opt. Fiber Technol. 54: 102075.

[6] Garg R., Tripathi S. M., Thyagarajan K., Bock W. J., (2013), Long period fiber grating based temperature-compensated high performance sensor for bio-chemical sensing applications. Sens. Actuators B. 176: 1121-1127.

[7] Lu P., Men L., Sooley K., Chen Q., (2009), Tapered fiber Mach–Zehnder interferometer for simultaneous measurement of refractive index and temperature. Appl. Phys. Lett. 94: 131110.

[8] Wang Y., Wang D. N., Yang M. W., Hong W., Lu P., (2009), Refractive index sensor based on a microhole in single-mode fiber created by the use of femtosecond laser micromachining. Optik. 34: 3328-3330.

[9] Mou C., Zhou K., Davies E., Zhang L., Bennion I., (2009), Fiber laser incorporating an intracavity microchannel for refractive index and temperature sensing. Photon. Technol. Lett. 21: 1559–1561.

[10] Wei T., Han Y., Tsai H. L., Xiao H., (2008), Miniaturized fiber inline Fabry–Perot interferometer fabricated with a femtosecond laser. Opt. Lett. 33: 536–538.

[11] Ran Z. L., Rao Y. J., Liu W. J., Liao X., Chiang K. S., (2008), Laser-micromachined Fabry–Perot optical fiber tip sensor for high-resolution temperature-independent measurement of refractive index. Opt. Exp. 16: 2252-2263.

[12] Sun H., He F., Zhou Z., Cheng Y., Xu Z., Sugioka K., Midorikawa K., (2007), Fabrication of microfluidic optical waveguides on glass chips with femtosecond laser pulses. Opt. Lett. 32: 1536–1538.

[13] Lai Y., Zhou K., Zhang L., Bennion I., (2006), Microchannels in conventional single-mode fibers. Opt. Lett. 31: 2559-2561.

[14] Petrovic J., Lai Y., Bennion I., (2008), Numerical and experimental study of microfluidic devices in step-index optical fibers. Appl. Opt. 47: 1410-1416.

[15] Qiu J., Hong W., Wang D. N., Gao D., Wang Y., Li Y., (2011), Transmission properties of the single mode fiber with a cross-sectional micro-channel investigated using time-domain finite difference (FDTD) method. Opt. Fiber Technol. 17: 580-585.

[16] Zhou J., Zheng Y., (2019), Fiber refractive index sensor with lateral-offset micro-hole fabricated by femtosecond laser. Optik. 185: 1-7.

[17] Yariv A., Yeh P., (2007), Optical electronics in modern communications. Oxford University Press.