Fused fiber micro-knots

Shahal, Shir; Klein, Avi; Masri, Gilad; Fridman, Moti

doi:10.1364/ao.55.004538

Cited by 36 publications

(12 citation statements)

References 13 publications

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“…For completeness, we first analyze a simple fiber micro-knot [27]. We start by tapering a fiber down to a 6 µm width over a length of 30-50 mm [28,29].…”

Section: A Simple Micro-knotmentioning

confidence: 99%

Complex fiber micro-knots

Shahal

Duadi

Linzon

et al. 2018

Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XI

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Fiber micro-knots are a promising and a cheap solution for advanced fiber-based sensors. We investigated complex fiber micro-knots in theory and experiment. We compared the measured spectral response and present an analytical study of simple micro-knots with double twists, twin micro-knots, figure-eight micro-knots, and tangled micro-knots. This research brings the simple fabrication process and robustness of fiber micro-knots into the world of complex resonators which may lead to novel optical devices based on fiber micro-knots.

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“…For completeness, we first analyze a simple fiber micro-knot [27]. We start by tapering a fiber down to a 6 µm width over a length of 30-50 mm [28,29].…”

Section: A Simple Micro-knotmentioning

confidence: 99%

Complex fiber micro-knots

Shahal

Duadi

Linzon

et al. 2018

Advanced Fabrication Technologies for Micro/Nano Optics and Photonics XI

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“…We measured the statistics of ultrafast rogue waves in fiber lasers and found that the underlying mechanism is different than what was previously considered. We will continue to investigate extreme events in different schemes, such as phase locked fiber lasers, 6, 10-13 fiber lasers with unique states of polarization, 14,15 and different types of fiber components [16][17][18][19] We hope to utilize our temporal imaging to focus light through dispersive material and to create rogue waves for high resolution imaging with nano-particles. [20][21][22][23][24][25]…”

Section: Conclusion and Future Prospectsmentioning

confidence: 99%

The picosecond structure of ultra-fast rogue waves

Klein

Shahal

Masri

et al. 2018

Real-Time Measurements, Rogue Phenomena, and Single-Shot Applications III

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We investigated ultrafast rogue waves in fiber lasers and found three different patterns of rogue waves: singlepeaks, twin-peaks, and triple-peaks. The statistics of the different patterns as a function of the pump power of the laser reveals that the probability for all rogue waves pattens increase close to the laser threshold. We developed a numerical model which prove that the ultrafast rogue waves patterns result from both the polarization mode dispersion in the fiber and the non-instantaneous nature of the saturable absorber. This discovery reveals that there are three different types of rogue waves in fiber lasers: slow, fast, and ultrafast, which relate to three different timescales and are governed by three different sets of equations: the laser rate equations, the nonlinear Schrodinger equation, and the saturable absorber equations, accordingly. This discovery is highly important for analyzing rogue waves and other extreme events in fiber lasers and can lead to realizing types of rogue waves which were not possible so far such as triangular rogue waves.

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“…Experimental results show that different peaks have distinct temperature sensitivities with values up to −0.542 rad/ • C as shown in Figure 10b, which is about 10 times greater than that of a regular adiabatic taper MZI when using similar phase-demodulation schemes. Other kinds of microfiber knot-based structures include a hybrid structure consisting of a microfiber knot resonator and a microfiber MZI [155], a miniature polarimetric interferometer by twisting a highly-birefringent microfiber [156], microfiber double-knot resonator [157], cascaded microfiber knot resonator [158], microfiber knot fused by CO2 laser [159].…”

Section: Microfiber Knotsmentioning

confidence: 99%

“…It is shown that an enhancement of orders of magnitudes of the Sagnac phase shift could be realized by the combination of slow-light and conventional propagation mechanisms, which can be used for the realization of highly compact optical rotation sensors and gyroscopes. Later, similar structure was made by coating the coil resonator with Teflon and wrapping Other kinds of microfiber knot-based structures include a hybrid structure consisting of a microfiber knot resonator and a microfiber MZI [155], a miniature polarimetric interferometer by twisting a highly-birefringent microfiber [156], microfiber double-knot resonator [157], cascaded microfiber knot resonator [158], microfiber knot fused by CO 2 laser [159].…”

Section: Microfiber Coilsmentioning

confidence: 99%

Recent Developments in Micro-Structured Fiber Optic Sensors

Chen

et al. 2017

Fibers

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Recent developments in fiber-optic sensing have involved booming research in the design and manufacturing of novel micro-structured optical fiber devices. From the conventional tapered fiber architectures to the novel micro-machined devices by advanced laser systems, thousands of micro-structured fiber-optic sensors have been proposed and fabricated for applications in measuring temperature, strain, refractive index (RI), electric current, displacement, bending, acceleration, force, rotation, acoustic, and magnetic field. The renowned and unparalleled merits of sensors-based micro-machined optical fibers including small footprint, light weight, immunity to electromagnetic interferences, durability to harsh environment, capability of remote control, and flexibility of directly embedding into the structured system have placed them in highly demand for practical use in diverse industries. With the rapid advancement in micro-technology, micro-structured fiber sensors have benefitted from the trends of possessing high performance, versatilities and spatial miniaturization. Here, we comprehensively review the recent progress in the micro-structured fiber-optic sensors with a variety of architectures regarding their fabrications, waveguide properties and sensing applications.

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Fused fiber micro-knots

Cited by 36 publications

References 13 publications

Complex fiber micro-knots

Complex fiber micro-knots

The picosecond structure of ultra-fast rogue waves

Recent Developments in Micro-Structured Fiber Optic Sensors

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