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High-Resolution Detection of Wavelength Shift Induced by an Erbium-Doped Fiber Bragg Grating

We analyze theoretically and verify experimentally a high-resolution and low-cost method to detect wavelength shift induced by an Erbium-doped fiber Bragg grating. A π-phase-shifted fiber Bragg grating on a temperature controlling setup is employed to achieve tunable single-sideband modulation. To further enhance measurement stability and diminish operational complexity, an asymmetric phase-shifted fiber Bragg grating is developed to reflect wide single-sideband modulation signals and avoid the tuning of the optical carrier wavelength. Through the using of microwave photonics technique, the wavelength shift of the Erbium-doped fiber Bragg grating induced by laser pumping is mapped onto the amplitude variation of the beat signal. The results indicate 1 GHz frequency shift, corresponding to 0.008 nm wavelength shift in the 1550 nm band, is able to be detected. The resolution can be further improved by using a more accurate temperature controlling system. Furthermore, our approach offers an alternative method to detect weak temperature and strain changes on chips or other sensing systems with high accuracy.

Ketersediaan

Informasi Detail

Judul Seri

JOURNAL OF LIGHTWAVE TECHNOLOGY; Vol.39 No.1 January 1 2021

No. Panggil

-

Penerbit

: .,

Deskripsi Fisik

p. 275 - 281

Bahasa

English

ISBN/ISSN

-

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

PHASE MODULATION
OPTICAL PUMPING
WAVELENGTH MEASUREMENT
NOTCH FILTERS

Info Detail Spesifik

DOI: 10.1109/JLT.2020.3024648

Pernyataan Tanggungjawab

Li Kai, Junqiang Sun, Ya Gao

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