Broadband, Lensless, and Optomechanically Stabilized Coupling into Microfluidic Hollow-Core Photonic Crystal Fiber Using Glass Nanospike

Zeltner, Richard; Xie, Shangran; Pennetta, Riccardo; Russell, P. St. J.

doi:10.1021/acsphotonics.6b00868

Cited by 16 publications

(9 citation statements)

References 32 publications

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“…The nanospike was fashioned by thermally tapering a SMF down to tip with dimensions smaller than the wavelength. The centripetal optical force stabilizes the nanospike precisely at the center of the hollow-core, allowing for nearly perfect light coupling between the SMF and HC-PCF [137][138][139]. What makes this work especially attractive is that the interaction between the nanospike and the HC-PCF is reported to be self-induced, very similar to the SIBA trap introduced previously.…”

Section: Hc-pcf Fotsmentioning

confidence: 56%

Optical Trapping and Manipulation Using Optical Fibers

Lou

Pang

2019

Adv. Fiber Mater.

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An optical trap forms a restoring optical force field to immobilize and manipulate tiny objects. A fiber optical trap is capable of establishing the restoring optical force field using one or a few pieces of optical fiber, and it greatly simplifies the optical setup by removing bulky optical components, such as microscope objectives from the working space. It also inherits other major advantages of optical fibers: flexible in shape, robust against disturbance, and highly integrative with fiber-optic systems and on-chip devices. This review will begin with a concise introduction on the principle of optical trapping techniques, followed by a comprehensive discussion on different types of fiber optical traps, including their structures, functionalities and associated fabrication techniques. A brief outlook to the future development and potential applications of fiber optical traps is given at the end.

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Section: Hc-pcf Fotsmentioning

confidence: 56%

Optical Trapping and Manipulation Using Optical Fibers

Lou

Pang

2019

Adv. Fiber Mater.

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“…However, the reflectivity is still much smaller compare to that at the air-interface. It is interesting to note that another type of the nanospike, a fused silica nanospike, can be utilized to reduce the Fresnel back-reflection to negligible level [57], which is also very useful for all-fiber optofluidic applications [57], [58].…”

Section: Interface and Endface Reflectivitymentioning

confidence: 99%

Analysis of Coupling Losses for All-Fiber Integration of Subwavelength Core Hybrid Optical Fibers

Xiao

Dong

et al. 2018

IEEE Photonics J.

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Coupling losses for all-fiber integration of subwavelength core hybrid optical fibers have been first analyzed and optimized in detail. We have taken into account the effects of mode size, mode shape, effective refractive index, tapering beat length, interface, and endface reflections on the coupling loss. By optimizing parameters such as the subwavelength core diameter, single mode condition, and transition length, the coupling losses can be reduced. In addition, the influence of the core fabrication and misalignment tolerances have been explored. The results will benefit the all-fiber integration of hybrid optical fibers and their nanoengineering realization.

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“…In 2016, the insertion loss of 0.48 dB was reported by splicing the tapered Kagome PCF and SMF [26] . Another tapering method named nanospike was reported [27] . By tapering the SMF into several hundreds of nanometers, the mode field increased, and the coupling efficiency was as high as 87.8%.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient and stable coupling of kilowatt-level continuous wave laser into hollow-core fibers

et al. 2022

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Fiber gas lasers based on gas-filled hollow-core fibers (HCFs) perfectly combine the advantages of fiber lasers and gas lasers and have obtained fast development in the past years. However, stable and efficient coupling of high-power pump lasers into the HCFs is one of the key problems to be solved. In this paper, we study the coupling of high-power continuous wave fiber lasers into anti-resonant HCFs through an end-cap. By optimizing the splicing parameters, a maximum laser power of 1167 W was injected into the 1-m-long HCFs, and 1021 W was obtained at the output end, giving a total transmission efficiency of ∼87.5%. A more than 1 h test showed the stability of such a coupling method. Meanwhile, the laser beam quality was well maintained. This work opens new opportunities for stable and highly efficient coupling of high-power lasers into HCFs, which is significant for its applications in many other fields besides high-power fiber gas lasers, such as high-power laser delivering.

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Broadband, Lensless, and Optomechanically Stabilized Coupling into Microfluidic Hollow-Core Photonic Crystal Fiber Using Glass Nanospike

Cited by 16 publications

References 32 publications

Optical Trapping and Manipulation Using Optical Fibers

Optical Trapping and Manipulation Using Optical Fibers

Analysis of Coupling Losses for All-Fiber Integration of Subwavelength Core Hybrid Optical Fibers

Highly efficient and stable coupling of kilowatt-level continuous wave laser into hollow-core fibers

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