Fiber-based devices for DWDM optical communication systems

Gu, Changzhi; Xu, Yuan; Liu, Yisi; Pan, J. J.; Zhou, Feng; Dong, Liang; He, Henry

doi:10.1117/12.564889

Cited by 4 publications

(5 citation statements)

References 29 publications

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“…These researchers subsequently extended the bandwidth to over 40 nm in conjunction with a fluid of water and ionic salt [46]. Gu et al [47] placed a LC between the transparent conductive material indium tin oxide (ITO) located upon a SPF. By applying a variable voltage to the ITO the refractive index of the LC was changed, modifying the optical transmission loss through the fiber.…”

Section: A Continuous Fiber Optofluidic Voasmentioning

confidence: 99%

“…Kerbage et al [56] Polymer filled MOF 29 Duduś et al [55] Ferrofluid shutter 28 Duduś et al [49] SPF with water-glycerine 26 Gu et al [47] SPF and LC 25…”

Section: Mof Optofluidic Voasmentioning

confidence: 99%

“…Gu et al [47] proposed an in-line wavelength-selective 2x2 switch where a grating (consisting of the photopolymer and the LC sections) was situated between two side-polished fibers with ITO coatings (Fig. 16).…”

Section: A Continuous Fiber Optofluidic Switches and Filtersmentioning

confidence: 99%

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A Review of Single-Mode Fiber Optofluidics

Blue

Dudus

Uttamchandani

2016

IEEE J. Select. Topics Quantum Electron.

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We review the field we describe as "single-mode fiber optofluidics" which combines the technologies of microfluidics with single-mode fiber optics for delivering new implementations of well-known single-mode optical fiber devices. The ability of a fluid to be easily shaped to different geometries plus the ability to have its optical properties easily changed via concentration changes or an applied electrical or magnetic field offers potential benefits such as no mechanical moving parts, miniaturization, increased sensitivity and lower costs. However, device fabrication and operation can be more complex than in established singlemode fiber optic devices. . Her research areas include optofluidic devices and applications.Deepak Uttamchandani (SM'05) received his PhD degree from University College London, London, UK in 1985 for research in the areas of optical fiber sensors and optical frequency domain reflectometry. He is currently the Head of the Centre for Microsystems and Photonics, University of Strathclyde, Glasgow, UK. His early research in MEMS concentrated on opto-thermal microresonator sensors and in investigating techniques for MEMS material characterization using micromechanical resonators. His recent research has concentrated on system applications of optical MEMS including intra-cavity MEMS-based laser systems, MEMS-based directional microphones and MEMS-based single-pixel imaging systems. He has also published in the fields of optofluidic devices, optical sensors, including sub-wavelength tipbased Raman spectroscopy, and in situ intraocular drug detection systems via optical spectroscopy in the eye. In 2014 he organized and chaired the IEEE Optical MEMS and Nanophotonics conference (Glasgow, UK)..

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Section: A Continuous Fiber Optofluidic Voasmentioning

confidence: 99%

“…Kerbage et al [56] Polymer filled MOF 29 Duduś et al [55] Ferrofluid shutter 28 Duduś et al [49] SPF with water-glycerine 26 Gu et al [47] SPF and LC 25…”

Section: Mof Optofluidic Voasmentioning

confidence: 99%

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A Review of Single-Mode Fiber Optofluidics

Blue

Dudus

Uttamchandani

2016

IEEE J. Select. Topics Quantum Electron.

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“…For example, Mathews et al [17] applied a variable voltage of up to 310 Vpp perpendicularly to a photonic crystal fiber (PCF) filled with a nematic liquid crystal to achieve up to 40dB attenuation through the change in photonic bandgap transmission of the fiber. Similarly, Gu et al [18] employed a liquid crystal as an overlay material to a side-polished fiber so that the fluid was in contact with the optical evanescent field of the fiber. Application of a variable voltage changed the orientation of the liquid crystal molecules (and thus the fluid refractive index) causing variable optical loss from the fiber with an attenuation up to 25 dB.…”

Section: Modeling and Characterization Of An Electrowetting Based Sinmentioning

confidence: 99%

Modeling and Characterization of an Electrowetting-Based Single-Mode Fiber Variable Optical Attenuator

Dudus

Blue

Zagnoni

et al. 2015

IEEE J. Select. Topics Quantum Electron.

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We report an optofluidics based variable optical attenuator (VOA) employing a tapered, side-polished singlemode optical fiber attached to an electrowetting-on-dielectric (EWOD) platform. The side-polishing of the fiber cladding gives access to the evanescent field of the guided mode, while the EWOD platform electrically controls the stepwise translation of a liquid droplet along the variable-thickness, polished cladding of the fiber. The penetration of the evanescent field into the droplet leads to tunneling of optical power from the fiber core to the droplet, from where it is radiatively lost. As a result of the variable cladding thickness, the position of the droplet along the length of the polished fiber determines the degree of penetration of the evanescent field into the droplet. The droplet position can be electrically changed, thus controlling the optical power loss from the fiber. This approach has been used to demonstrate an optofluidic continuous-fiber VOA typically providing up to 26 dB of broadband attenuation in the 1550 nm transmission window, with a wavelength dependent loss less than 1.1 dB. In this paper, we present the theoretical modeling and experimental characterization of the system, discussing the influence of the design parameters on the performance of this VOA.

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“…The higher thermo‐optic coefficient of the fluid compared with that of silica allowed the creation of a tunable all‐fibre device such as a gain equalisation filter. An inline fibre VOA with 25 dB range was demonstrated using an SMF polished on one side to within 1 µm of the core and a layer of variable refractive index liquid crystal applied to the polished surface [7].…”

Section: Introductionmentioning

confidence: 99%

Optical characterisation of long‐period grating using liquid droplets on an electrowetting‐on‐dielectric platform

Dudus¹,

Blue²,

Konstantaki

et al. 2014

Micro & Nano Letters

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This paper describes the use of digital electrowetting as a means of characterising and modifying the optical transmission properties of long period gratings (LPGs) fabricated in boron doped germanosilicate single mode fibres. An electrowetting based platform has been designed to move fluid droplets, of around 2 µL volume, along the main axis of the LPG fibre. The droplets make contact with the cladding over the grating region of the fibre. Optical measurements are presented illustrating the tuning of the optical resonance wavelength of an LPG as the droplet advances step-wise along the fibre cladding under electrowetting based actuation, and the increase of 53 % in the LPG tuning range achieved by side-polishing the grating section of the fibre.

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Fiber-based devices for DWDM optical communication systems

Cited by 4 publications

References 29 publications

A Review of Single-Mode Fiber Optofluidics

A Review of Single-Mode Fiber Optofluidics

Modeling and Characterization of an Electrowetting-Based Single-Mode Fiber Variable Optical Attenuator

Optical characterisation of long‐period grating using liquid droplets on an electrowetting‐on‐dielectric platform

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