Optical Fibers with Patterned ZnO/Electrode Coatings for Flexural Actuators

ABSTRACTPiezoelectric ZnO coatings were used in this work to develop a flexural actuator for an optical fiber. The basic device geometry was as follows: inner Cr/Au electrodes were evaporated onto a cleaned optical fiber; a thick ZnO coating was then grown by sputtering; finally a set of 2mm ring top electrodes were deposited through a shadow mask. Flexural actuators were made by photolithographically patterning either the inner or outer Cr/Au drive electrodes so that it was split down the length of the fiber. This enables each half of the fiber to be actuated independently. The result is that the optical fiber is forced to flex.A processing scheme by which 30 μm gaps could be patterned into the electrodes was developed using standard clean room techniques. Such flexural actuators are attractive for scanning near field optical microscopes and in fiber alignment devices.

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Twisted Silica Microstructured Optical Fiber with Equiangular Spiral Six-Ray Geometry

Fibers ◽

10.3390/fib9050027 ◽

2021 ◽

Vol 9 (5) ◽

pp. 27

Author(s):

Anton V. Bourdine ◽

Alexey Yu. Barashkin ◽

Vladimir A. Burdin ◽

Michael V. Dashkov ◽

Vladimir V. Demidov ◽

...

Keyword(s):

Optical Fiber ◽

Optical Fibers ◽

Near Field ◽

Outer Diameter ◽

Microstructured Optical Fibers ◽

Transmission Parameters ◽

Microstructured Optical Fiber ◽

Drawing Speed ◽

Ray Geometry ◽

Equiangular Spiral

This work presents fabricated silica microstructured optical fiber with special equiangular spiral six-ray geometry, an outer diameter of 125 µm (that corresponds to conventional commercially available telecommunication optical fibers of ratified ITU-T recommendations), and induced chirality with twisting of 200 revolutions per minute (or e.g., under a drawing speed of 3 m per minute, 66 revolutions per 1 m). We discuss the fabrication of twisted microstructured optical fibers. Some results of tests, performed with pilot samples of designed and manufactured stellar chiral silica microstructured optical fiber, including basic transmission parameters, as well as measurements of near-field laser beam profile and spectral and pulse responses, are represented.

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Extending the Possibilities of Near-Field Scanning Optical Microscopy for Simultaneous Topographical and Chemical Force Imaging

MRS Proceedings ◽

10.1557/proc-584-195 ◽

1999 ◽

Vol 584 ◽

Author(s):

N. Nagy ◽

M. C. Goh

Keyword(s):

Optical Fiber ◽

Optical Fibers ◽

Microcontact Printing ◽

Near Field ◽

Optical Microscope ◽

Optical Probe ◽

Germanium Dioxide ◽

Fiber Optic Probe ◽

Pure Silica ◽

Near Field Scanning

AbstractThe Near-field Scanning Optical Microscope (NSOM) is an innovative new form of surface microscopy, which can be used to obtain local spectroscopic information about surfaces, enabling the characterization of nanometer-sized regions. The most important component of this instrument is the scanning probe tip. In this paper, we discuss the production of a novel fiber optic probe that can be used in local spectroscopy with an NSOM, but also for simultaneous imaging of topography and chemical forces. The probe consists of a bent, tapered silicon dioxide optical fiber. We have determined the rates of selective wet chemical etching of germanium dioxide doped pure silica optical fibers and used this information to optimize the probe etching process. A systematic approach for the development and testing of such probes is presented. The performance of the optical probes was characterized using surfaces prepared by the technique of microcontact printing. Phase and friction images of these surfaces were obtained using both standard atomic force microscopy tips and the optical fiber probe. The new optical probe was capable of distinguishing between different chemical regions on the patterned surface.

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Researches of Parameters of Chiral Few-Mode Optical Fiber Pilot Sample with Improved Height of Step Refractive Index Profile

Proceedings of Telecommunication Universities ◽

10.31854/1813-324x-2021-7-1-6-19 ◽

2021 ◽

Vol 7 (1) ◽

pp. 6-19

Author(s):

A. Bourdine ◽

A. Barashkin ◽

V. Burdin ◽

M. Dashkov ◽

V. Demidov ◽

...

Keyword(s):

Refractive Index ◽

Optical Fiber ◽

Optical Fibers ◽

Near Field ◽

Refractive Index Profile ◽

Index Profile ◽

Technological Parameters ◽

Dispersion Parameters ◽

Core Diameter ◽

Pilot Sample

This work presents results of researhes of fabricated pilot sample of chiral few-mode optical fiber (FMF) with induced twisting of 10 and 66 revolutions per meter, core diameter 11 µm (that almost corresponds to standard singlemode optical fibers), typical “telecommuniction” cladding diameter 125 µm and improved height of step refractive index profile. Proposed few-mode optical fiber supports 4 guided modes over “C”-band. We considered design and selection of desired technological parameters, based on results of computations, performed by both rigorous and approximation methods. Spectral curves of dispersion parameters are reprented as well as results of experimental measurements near-field laser beam profile and spectral and pulse responces of laser-excited optical signals.

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Heating and Burning of Optical Fibers and Cables by Light Scattered from Bubble Train Formed by Optical Fiber Fuse

IEICE Transactions on Communications ◽

10.1587/transcom.e95.b.2638 ◽

2012 ◽

Vol E95.B (8) ◽

pp. 2638-2641 ◽

Cited By ~ 1

Author(s):

Makoto YAMADA ◽

Akisumi TOMOE ◽

Takahiro KINOSHITA ◽

Osanori KOYAMA ◽

Yutaka KATUYAMA ◽

...

Keyword(s):

Optical Fiber ◽

Optical Fibers

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Determining of Refractive Index Profile of Optical Fibers from Measured Intensity in Near-Field Zone

Telecommunications and Radio Engineering ◽

10.1615/telecomradeng.v60.i789.120 ◽

2003 ◽

Vol 60 (7-9) ◽

pp. 86-91

Author(s):

A.I. Filipenko

Keyword(s):

Refractive Index ◽

Optical Fibers ◽

Near Field ◽

Refractive Index Profile ◽

Index Profile ◽

Field Zone ◽

Measured Intensity

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Nano- and Micropatterning on Optical Fibers by Bottom-Up Approach: The Importance of Being Ordered

Applied Sciences ◽

10.3390/app11073254 ◽

2021 ◽

Vol 11 (7) ◽

pp. 3254

Author(s):

Marco Pisco ◽

Francesco Galeotti

Keyword(s):

Optical Fiber ◽

Optical Fibers ◽

Self Assembly ◽

Ordered Structures ◽

Bottom Up ◽

Photonic Structures ◽

Fiber Technology ◽

Optical Fiber Probes ◽

Fiber Probes ◽

Self Assembled

The realization of advanced optical fiber probes demands the integration of materials and structures on optical fibers with micro- and nanoscale definition. Although researchers often choose complex nanofabrication tools to implement their designs, the migration from proof-of-principle devices to mass production lab-on-fiber devices requires the development of sustainable and reliable technology for cost-effective production. To make it possible, continuous efforts are devoted to applying bottom-up nanofabrication based on self-assembly to decorate the optical fiber with highly ordered photonic structures. The main challenges still pertain to “order” attainment and the limited number of implementable geometries. In this review, we try to shed light on the importance of self-assembled ordered patterns for lab-on-fiber technology. After a brief presentation of the light manipulation possibilities concerned with ordered structures, and of the new prospects offered by aperiodically ordered structures, we briefly recall how the bottom-up approach can be applied to create ordered patterns on the optical fiber. Then, we present un-attempted methodologies, which can enlarge the set of achievable structures, and can potentially improve the yielding rate in finely ordered self-assembled optical fiber probes by eliminating undesired defects and increasing the order by post-processing treatments. Finally, we discuss the available tools to quantify the degree of order in the obtained photonic structures, by suggesting the use of key performance figures of merit in order to systematically evaluate to what extent the pattern is really “ordered”. We hope such a collection of articles and discussion herein could inspire new directions and hint at best practices to fully exploit the benefits inherent to self-organization phenomena leading to ordered systems.

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Fabrication of Lensed Plastic Optical Fiber Array Using Electrostatic Force

Journal of Manufacturing Science and Engineering ◽

10.1115/1.4004204 ◽

2011 ◽

Vol 133 (3) ◽

Cited By ~ 1

Author(s):

Yih-Tun Tseng ◽

Jhong-Bin Huang ◽

Che-Hsin Lin ◽

Chin-Lung Chen ◽

Wood-Hi Cheng

Keyword(s):

Optical Fiber ◽

Optical Fibers ◽

Electrostatic Force ◽

Coupling Efficiency ◽

Numerical Aperture ◽

Uv Curing ◽

Power Budget ◽

Fiber Array ◽

Plastic Optical Fibers ◽

Efficient Coupling

The GI (graded-index) POFs (Plastic optical fibers), which has been proven to reach distances as long as 1 km at 1.25 Gb/s has a relatively low numerical aperture . Therefore, the efficient coupling of GI POFs to the light source has become critical to the power budget in the system. Efficient coupling for a POFs system normally involves either a separate lens or the direct formation of the lens at the end of the fiber. Forming the lens-like structure directly on the fiber end is preferred for simplicity of fabrication and packaging, such as polishing and fusion, combine different fibers with the cascaded fiber method and hydroflouride (HF) chemical etching. These approaches are well established, but applicable only to glass. Optical assembly architecture for multichannel fibers and optical devices is critical to optical fiber interconnections. Multichannel fiber-pigtail laser diode (LD) modules have potential for supporting higher data throughput and longer transmission distances. However, to be of practical use, these modules must be more precise. This work proposes and manufactures lensed plastic optical fibers (LPOF) array. This novel manipulation can be utilized to fabricate an aspherical lens on a fiber array after the UV curing of the photo-sensitive polymer; the coupling efficiency (CE) is increased and exceeds 47% between the LD array and the fiber array.

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