Modified frequency-shifted interferometer: encoding wavelength into phase

Xi Chen; Ciming Zhou; Dian Fan; Li Qian; Yandong Pang; Cong Wei; Chenguang Zhao; Sijing Liang; Yuxiao Li

doi:10.3788/COL202018.101203

Journals >Chinese Optics Letters >Volume 18 >Issue 10 >Page 101203 > Article

Chinese Optics Letters
Vol. 18, Issue 10, 101203 (2020)

Modified frequency-shifted interferometer: encoding wavelength into phase

Xi Chen^1、2、3, Ciming Zhou¹, Dian Fan^1、*, Li Qian^1、4, Yandong Pang^1、2, Cong Wei^1、2, Chenguang Zhao¹, Sijing Liang¹, and Yuxiao Li^1、2

Author Affiliations

¹National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan 430070, China

²School of Information Engineering, Wuhan University of Technology, Wuhan 430065, China

³Department of Mechanical and Electrical Engineering, College of Post and Telecommunication, Wuhan Institute of Technology, Wuhan 430073, China

⁴Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON M5S 3G4, Canada

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DOI: 10.3788/COL202018.101203 Cite this Article Set citation alerts

Xi Chen, Ciming Zhou, Dian Fan, Li Qian, Yandong Pang, Cong Wei, Chenguang Zhao, Sijing Liang, Yuxiao Li. Modified frequency-shifted interferometer: encoding wavelength into phase[J]. Chinese Optics Letters, 2020, 18(10): 101203 Copy Citation Text

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Schematic diagram of the MFSI based on a compound interferometer. AOM, acoustic optic modulator; CIR-1, CIR-2, circulators; PC, polarization controller; C1, C2, fiber couplers; MZI, formed by CIR-2 and C2.

Fig. 1. Schematic diagram of the MFSI based on a compound interferometer. AOM, acoustic optic modulator; CIR-1, CIR-2, circulators; PC, polarization controller;

C_{1}

C_{2}

, fiber couplers; MZI, formed by CIR-2 and

C_{2}

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Fig. 2. (a) Interference signal from MFSI obtained at 1548 nm and 1554 nm and (b) 1548 nm and 1554 nm phase intercept.

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Fig. 3. Wavelength

1548 - 1553 nm

interference signal and their phase changes intercept. (a) Wavelength

1548 - 1553 nm

interference signal and (b)

1548 - 1553 nm

phase changes intercept.

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TSL (nm)	Phase (rad)	PD (rad)	MWL (nm)
1548.000	1.3842	0.0000	1548.000
1549.000	0.3336	$- 1.0506$	1549.003
1550.000	$- 0.7156$	$- 2.0998$	1550.005
1551.000	$- 1.7672$	$- 3.1514$	1551.009
1552.000	$- 2.8080$	$- 4.1922$	1552.004
1553.000	2.4330	$- 5.2343$	1552.999
1554.000	1.3792	$- 0.0050$	1548.005