High-Speed and High-Resolution Microwave Photonic Interrogation of a Fiber-Optic Refractometer With Plasmonic Spectral Comb | PERPUSTAKAAN UNIVERSITAS KATOLIK PARAHYANGAN

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High-Speed and High-Resolution Microwave Photonic Interrogation of a Fiber-Optic Refractometer With Plasmonic Spectral Comb

Wang, Guangying - Nama Orang; Cao, Yuan - Nama Orang; Yao, Jianping - Nama Orang; Feng, Xinhuan - Nama Orang; Guan, Bai-Ou - Nama Orang; Guo, Tuan - Nama Orang; Zhang, Xuejun - Nama Orang; Hu, Nan - Nama Orang; Duan, Shaochen - Nama Orang;

Microwave photonic interrogation of a high-speed and high-resolution refractive index (RI) sensor based on a tilted fiber Bragg grating with surface plasmon resonance (TFBG-SPR) is proposed and experimentally demonstrated. Instead of demodulating the wavelength shift or intensity change of a TFBG-SPR spectrum in the optical domain, we convert the TFBG-SPR spectrum to the time domain based on spectral shaping (SS) and wavelength-to-time (WTT) mapping and use a digital signal processor (DSP) to extract the RI information at a high speed and high resolution. In the experiment, when an Au-coated TFBG is immersed in a solution, the TFBG-SPR spectrum will produce a dip. When the RI changes, the location of the dip in the TFBG-SPR spectrum will shift, which is a function of the RI. By passing a broadband frequency-chirped optical pulse generated by a frequency swept laser source to the TFBG-SPR and detecting the optical pulse at the output of the TFBG-SPR at a photodetector (PD), due to SS-WTT mapping, a temporal waveform with its shape identical to the optical spectrum is produced. A DSP is then used to extract the SPR envelope information from the temporal waveform. By monitoring the changes of the SPR envelope, the RI information is interrogated with a high resolution of 1.123 × 10 -6 RIU at a high speed over 20 kHz.

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Informasi Detail

Judul Seri: JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.38 No.7 April 1 2020
No. Panggil: -
Penerbit: : .,
Deskripsi Fisik: p. 2073 - 2080
Bahasa: English
ISBN/ISSN: -
Klasifikasi: -
Tipe Isi: -
Tipe Media: -
Tipe Pembawa: -
Edisi: -
Subjek: MICROWAVE PHOTONICS
SURFACE PLASMON RESONANCE
REFRACTIVE INDEX MEASUREMENT
TILTED FIBER BRAGG GRATING
Info Detail Spesifik: -
Pernyataan Tanggungjawab: Guangying Wang, Yuan Cao, Nan Hu, Xuejun Zhang, Shaochen Duan, Tuan Guo, Xinhuan Feng, Bai-Ou Guan, Jianping Yao

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