[1] [1] IWASAKI Y, HORIUCHI T, NIWA O. Detection of electrochemical enzymatic reactions by surface plasmon resonance measurement[J]. Analytical chemistry, 2001, 73（7）: 1595-1598.

[2] [2] SINGH S, GUPTA B D. Fabrication and characterization of a surface plasmon resonance based fiber optic sensor using gel entrapment technique for the detection of low glucose concentration[J]. Sensors and Actuators B: Chemical, 2013, 177: 589-595.

[3] [3] SHARMA A K, GUPTA B D. On the performance of different bimetallic combinations in surface plasmon resonance based fiber optic sensors[J]. Journal of Applied Physics, 2007, 101（9）: 093111-1~09311-6.

[4] [4] WU L, CHU H S, KOH W S, et al. Highly sensitive graphene biosensors based on surface plasmon resonance [J]. Optics Express, 2010, 18（14）: 14395-14400.

[5] [5] HOMOLA J. Optical fiber sensor based on surface plasmon excitation[J]. Sensors and Actuators B: Chemical, 1995, 29（1-3）: 401-405.

[6] [6] OTTO A. Excitation of nonradiative surface plasma waves in silver by the method of frustrated total reflection[J]. Zeitschrift Fur Physik A Hadrons and Nuclei, 1968, 216（4）: 398-410.

[10] [10] WANG F, SUN Z, LIU C, et al. A high-sensitivity photonic crystal fiber based on the surface plasmon resonance biosensor for detection of density alteration in non-physiological cells （DANCE）[J]. Opto-Electronics Review, 2018, 26（1）: 50-56.

[11] [11] YASLI A. Cancer detection with surface plasmon resonance-based photonic crystal fiber biosensor[J]. Plasmonics, 2021, 16: 1605-1612.

[13] [13] CHEN X, XIA L, LI C. Surface plasmon resonance sensor based on a novel D-shaped photonic crystal fiber for low refractive index detection[J]. IEEE Photonics Journal, 2018, 10（1）: 1-9.

[14] [14] PAUL A K, SARKAR A K, RAHMAN A B S, et al. Twin core photonic crystal fiber plasmonic refractive index sensor[J]. IEEE Sensors Journal, 2018, 18（14）: 5761-5769.

[15] [15] CHEN Y, XIE Q, LI X, et al. Experimental realization of D-shaped photonic crystal fiber SPR sensor[J]. Journal of Physics D: Applied Physics, 2016, 50（2）: 025101-1~025101-6.

[16] [16] RIFAT A A, MAHDIRAJI G A, SUA Y M, et al. Surface plasmon resonance photonic crystal fiber biosensor: a practical sensing approach[J]. IEEE Photonics Technology Letters, 2015, 27（15）: 1628-1631.

[17] [17] DEVORE J R. Refractive indices of rutile and sphalerite[J]. JOSA, 1951, 41（6）: 416-419.

[18] [18] SANTOS D F, GUERREIRO A, BAPTISTA J M. SPR microstructured D-type optical fiber sensor configuration for refractive index measurement[J]. IEEE Sensors Journal, 2015, 15（10）: 5472-5477.

[19] [19] USHA S P, SHRIVASTAV A M, GUPTA B D. FO-SPR based dextrose sensor using Ag/ZnO nanorods/GOx for insulinoma detection[J]. Biosensors and Bioelectronics, 2016, 85: 986-995.

[21] [21] YEH Y L. Real-time measurement of glucose concentration and average refractive index using a laser interferometer[J]. Optics and Lasers in Engineering, 2008, 46（9）: 666-670.

[22] [22] PATHAK A K, RAHMAN B M A, VIPHAVAKIT C. Nanowire embedded micro-drilled dual-channel approach to develop highly sensitive biosensor[J]. IEEE Photonics Technology Letters, 2022, 34（13）: 707-710.

[23] [23] HOMOLA J. Present and future of surface plasmon resonance biosensors[J]. Analytical and bioanalytical chemistry, 2003, 377: 528-539.

[24] [24] LIDIYA A E, RAJA R V J, NGO Q M, et al. Detecting hemoglobin content blood glucose using surface plasmon resonance in D-shaped photonic crystal fiber[J]. Optical Fiber Technology, 2019, 50: 132-138.

[25] [25] WANG F, SUN Z, LIU C, et al. A highly sensitive dual-core photonic crystal fiber based on a surface plasmon resonance biosensor with silver-graphene layer[J]. Plasmonics, 2017, 12: 1847-1853.