Photonic Crystal Fiber Strain Sensor Based on Modified Mach–Zehnder Interferometer

Hu, Lianzhe; Chan, Chi Chiu; Dong, Xinyong; Wang, Y. P.; Zu, Peng; Wong, Wei Chang; Qian, Wenwen; Li, T.

doi:10.1109/jphot.2011.2180708

Cited by 84 publications

(37 citation statements)

References 18 publications

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“…Different PCF configurations have been used for measuring strain [25,[33][34][35]. By using a multimode PCF, and careful hole collapse during splicing, a MZI was realized by coupling to two different core modes, LP 01 and LP 31 , allowing the light to be confined within the core and not as susceptible to ambient environment.…”

Section: Mach-zehnder Interferometer (Mzi)mentioning

confidence: 99%

“…Zheng et al [25] were able to demonstrate a temperature and RI insensitive strain sensor with a sensitivity of 2.1 pm/με at 1550 nm with a 45 mm long PCF between two lengths of SMF. By introducing an additional collapsed region in the center of the length of PCF, two cascaded MZIs were created; the extinction ratio of the MZI induced fringes and in turn the measurement accuracy was improved [34]. The sensitivities for a normal SMF-PCF-SMF MZI and the modified MZI were 1.87 and 11.22 dB/mε, respectively.…”

Section: Mach-zehnder Interferometer (Mzi)mentioning

confidence: 99%

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Photonic Crystal Fiber–Based Interferometric Sensors

Hu¹,

Wong²,

Shum³

2018

Selected Topics on Optical Fiber Technologies and Applications

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Photonic crystal fibers (PCFs), also known as microstructured optical fibers, are a highlighted invention of optical fiber technology which have unveiled a new domain of manipulating light in engineered fiber waveguides with unparalleled flexibility and controllability. Since the report of the first fabricated PCF in 1996, research in PCFs has resulted in numerous explorations, development and commercialization of PCF-based technologies and applications. PCFs contain axially aligned air channels which provide a large degree of freedom in design to achieve a variety of peculiar properties; numerous PCF-based sensors have been proposed, developed and demonstrated for a broad range of sensing applications. In this chapter, we will review the field of research on design, development and experimental achievement of PCF-based interferometric sensors for physical and biomedical sensing applications.

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Section: Mach-zehnder Interferometer (Mzi)mentioning

confidence: 99%

Section: Mach-zehnder Interferometer (Mzi)mentioning

confidence: 99%

Photonic Crystal Fiber–Based Interferometric Sensors

Hu¹,

Wong²,

Shum³

2018

Selected Topics on Optical Fiber Technologies and Applications

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“…따라서, PCF 기반 광섬유 센서들은 기존의 광섬유 센서들에 비해 상대적으로 온도에 둔감한 장 점을 갖고, 이로 인해 마하-젠더(Mach-Zehnder) 또는 페브리-페로(Fabry-Perot) 간섭계 구조를 이용하여 기존 광섬유 센서 들에 비해 상대적으로 온도에 둔감한 스트레인(strain) 센서 들이 다수 제안되어왔다 [3][4][5] . 특히, 편광 유지 PCF(polarizationmaintaining PCF: 이하 PM-PCF) 기반의 사냑 복굴절 간섭계 (Sagnac birefringence interferometer) [6] 는 구조가 간단하고, 스트레인에 대한 복굴절 변화 민감도가 높으며, 입력 편광에 의존하지 않는 특성을 가지기 때문에 스트레인 센서부 (sensor head)나 센서 복조용 필터(demodulation filter)로 널 리 사용되고 있다 [7][8][9][10][11][12] . 이러한 PM-PCF 기반 사냑 복굴절 간섭계를 사용한 편광 간섭형 스트레인 센서(polarimetric strain sensor)들을 간략히 살펴보면, 8.6 cm 길이의 PM-PCF가 센서부로 사용된 스트 레인 센서가 2007년에 처음으로 발표되었고, 스트레인 측정 범위는 0~32 mε, 스트레인 민감도는 ~0.23 pm/με이었다 [7] .…”

Section: 서 론unclassified

“…최근에는 본 저자들도 3.9 cm 길이의 PM-PCF로 구성된 사냑 복굴절 간섭계를 이용하여 0~10 mε의 측정범위 에서 ~2.34 pm/με의 민감도를 갖는 스트레인 센서를 제안하 였다 [10] . 이외에도 13.6 cm 길이의 PM-PCF가 복굴절 요소로 사용된 세기 기반의 편광 간섭형 스트레인 센서 [11] 와 9.2 cm 길이의 PCF로 구성된 마하-젠더 간섭계 기반 스트레인 센서 등도 보고되었다 [12] . 이러한 PM-PCF 기반의 스트레인 센서는 광섬유 브래그 격자(fiber Bragg grating: 이하 FBG) 기반 스트레인 센서 [17,18] .…”

Section: 서 론unclassified

Polarization-Maintaining Photonic-Crystal-Fiber-based Polarimetric Strain Sensor with a Short Sensing Head

Noh¹,

Lee

2014

Korean Journal of Optics and Photonics

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In this paper we have implemented a temperature-insensitive polarimetric fiber strain sensor based on a Sagnac birefringence interferometer composed of a short polarization-maintaining photonic crystal fiber (PM-PCF), a 3-dB fiber coupler, and polarization controllers. The PM-PCF used as a sensor head was 2 cm long, which is the shortest length for a sensing element compared to other polarimetric fiber strain sensors using a PM-PCF. The proposed sensor showed a strain sensitivity of ~0.87 pm/με with a strain measurement range from 0 to 8 mε. The temperature sensitivity was also investigated and measured as approximately -12 pm/℃, when ambient temperature changed from 30 to 100℃. This temperature sensitivity is about 82 times smaller than that of conventional polarization-maintaining fiber (approximately -990 pm/℃). In particular, from a practical perspective we have experimentally and theoretically confirmed that the wavelength selected for the indicator dip location does not make a significant difference in the strain sensitivity.

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“…Therefore, the corresponding requirements for strain change are higher. Compared with the traditional sensor, the optical fiber sensor has the advantages of small volume, lightweight, corrosion resistance, and antielectromagnetic interference [1][2][3][4]. Thus its application is more and more extensive, especially for measurement of temperature [5], strain [6], refractive index [7], and other parameters.…”

Section: Introductionmentioning

confidence: 99%

Temperature Insensitive Strain Sensor with Asymmetrical Cascading Structure Based on Photonic Crystal Fiber in Chemical Corrosion

Yang

et al. 2017

Journal of Sensors

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In this paper, a corroded photonic crystal fiber (PCF) sensor is presented on the basis of core-offset splicing and waist-enlarged fiber taper corroded by hydrofluoric acid (HF). The Mach-Zehnder interference theory is used to analyze the relationship between transmission spectrum and strain. The final results obtained from experiments show that the strain sensor's sensitivity is about −6.57 pm/ and the linearity is 0.99962 within the range of 0∼1000 , while the sensor is corroded by HF for 35 minutes at room temperature. In the temperature range of 20 ∘ C∼80 ∘ C, the sensor's sensitivity to temperature is only 1.63 pm/ ∘ C, which is insensitive to temperature. Because of its advantage compared to traditional optical fiber sensors, this sensor can avert the cross-sensitive problem when temperature and strain are measured together and has some other advantages including easily fabricated, simple structure and accurate sensitivity. It can be used in many fields, such as industrial production, monitoring, and aerospace.

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Photonic Crystal Fiber Strain Sensor Based on Modified Mach–Zehnder Interferometer

Cited by 84 publications

References 18 publications

Photonic Crystal Fiber–Based Interferometric Sensors

Photonic Crystal Fiber–Based Interferometric Sensors

Polarization-Maintaining Photonic-Crystal-Fiber-based Polarimetric Strain Sensor with a Short Sensing Head

Temperature Insensitive Strain Sensor with Asymmetrical Cascading Structure Based on Photonic Crystal Fiber in Chemical Corrosion

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