Broadened-Laser-Driven Polarization-Maintaining Hollow-Core Fiber Optic Gyroscope

Morris, Therice A.; Digonnet, Michel J. F.

doi:10.1109/jlt.2019.2949231

Cited by 7 publications

(3 citation statements)

References 12 publications

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“…The substantial application of PMF is widely acknowledged as the freestanding fiber coil in FOG [13][14][15]. Normally the optical fiber is winded into few centimeter radius sized coils.…”

Section: Bending Loss and Birefringence Performancementioning

confidence: 99%

“…Furthermore, the hollow core photonic bandgap fiber (HC-PBGF) brings along benefits of light weight, long lifetime and irradiation resistance, which finds significant potentials for fiber optic gyroscopes (FOGs) [13][14][15]. In 2004, Chen et.al reported an anisotropy hollowcore photonic bandgap fiber [6], with group modal birefringence of 2.5×10 -2 at 1550 nm and transmission loss of about 1500 dB/km from 1500 nm to 1625 nm.…”

Section: Introductionmentioning

confidence: 99%

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Design and Analysis of Ultra-Wideband Highly-Birefringent Bragg Layered Photonic Bandgap Fiber With Concave-Index Cladding

et al. 2021

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A ultra-wideband highly-birefringent Bragg layered photonic bandgap fiber (BL-PBGF) with concave-index cladding is proposed and demonstrated, by incorporating PBG effect with Bragg multilayers for the first time to the best of our knowledge. The proposed BL-PBGF contains honeycomb capillary cladding and elliptical core with horizontal asymmetry for birefringence. By innovatively introducing three modified silica capillary layers with different refractive indices, the cladding with concave-convex refractive index distribution is combined, providing superior characteristics for optical polarization implementation, such as confinement loss, bending loss and birefringence. Results show that the confinement loss stays around 2 dB/km level within ultrawide 180 nm wavelength range, basically 3 times wider than conventional PBGF. The birefringence maintains at the order of 10 -3 across the entire bandwidth and the maximum value reaches 2.5×10 -3 . The bending loss at 1550 nm is significantly reduced to below one third of the conventional uniform index PBGF when the bending radius is less than 3.5 mm, and maintains below 1 dB/km level when the bending radius is beyond 10 mm. The proposed universal BL-PBGF has great potential in minimized freestanding fiber coil and small footprint fiber optical gyroscope applications.

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“…The substantial application of PMF is widely acknowledged as the freestanding fiber coil in FOG [13][14][15]. Normally the optical fiber is winded into few centimeter radius sized coils.…”

Section: Bending Loss and Birefringence Performancementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Ultra-Wideband Highly-Birefringent Bragg Layered Photonic Bandgap Fiber With Concave-Index Cladding

et al. 2021

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“…It is actually the connection between the HC-PBF and the traditional fiber whether by butt coupling or fusion splicing, which would cause a variety of non-reciprocity errors and they can be suppressed by direct coupling between fiber coil and IOC [10], [12], [13]. Therefore, the direct coupling of HC-PBF and IOC is a key technology that must be broken through for highperformance HC-PBFOGs [14]. A direct coupling method of HC-PBF with IOC has been proposed [15], in which there is no air gap between HC-PBF and IOC, but it involves precise angle-cleaving operation of the HC-PBF end-face and precise polishing of the adapter attachment face that must be angled at the same angle as the end-face of HC-PBF.…”

Section: Introductionmentioning

confidence: 99%

Low-Loss Low-Back-Reflection Coupling of Hollow-Core Photonic Bandgap Fiber With Integrated-Optic Circuit in Fiber Optic Gyroscope

Song

et al. 2020

IEEE Access

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Photonic bandgap fiber-optic gyroscope has excellent environment adaptability and shows great prospect. The coupling between hollow-core photonic bandgap fiber coil and integrated-optic circuit is a crucial technology in photonic bandgap fiber-optic gyroscope. A low-loss low-back-reflection method for the coupling between a hollow-core photonic bandgap fiber and integrated-optic circuit is proposed. The end-face of the hollow-core photonic bandgap fiber only needs to be flat-cleaved with a general fiber cleaver. The optimal coupling angle is determined and experimentally verified to overcome the effect caused by the air gap between angle-cleaved integrated-optic circuit and flat-cleaved hollow-core photonic bandgap fiber end-face. Experimental results reveal that the coupling loss and back-reflection of the hollow-core photonic bandgap fiber with the integrated-optic circuit are better than ~3.2 dB and ~-43 dB, respectively. Compared with conventional butt coupling and fusion splicing, the coupling performance of the proposed method is significantly improved, which can achieve low-loss, low-back-reflection, and high reliability. The method provides a foundation for the coupling between hollow-core photonic bandgap fiber coil and integrated-optic circuit in fiber optic gyroscope.INDEX TERMS Gyroscopes, hollow-core photonic bandgap fibers, integrated-optic circuit, optical fiber sensors.

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Research on the feedback control characteristics and parameter optimization of closed-loop fiber optic gyroscope

Yan

Miao

Chen

et al. 2021

Optik

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Broadened-Laser-Driven Polarization-Maintaining Hollow-Core Fiber Optic Gyroscope

Cited by 7 publications

References 12 publications

Design and Analysis of Ultra-Wideband Highly-Birefringent Bragg Layered Photonic Bandgap Fiber With Concave-Index Cladding

Design and Analysis of Ultra-Wideband Highly-Birefringent Bragg Layered Photonic Bandgap Fiber With Concave-Index Cladding

Low-Loss Low-Back-Reflection Coupling of Hollow-Core Photonic Bandgap Fiber With Integrated-Optic Circuit in Fiber Optic Gyroscope

Research on the feedback control characteristics and parameter optimization of closed-loop fiber optic gyroscope

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