A capillary optical fiber modulator derivates from magnetic fluid

Yang, Xinghua; Liu, Yanxin; Zheng, Yongqiu; Li, Shouzhu; Yuan, Libo; Yuan, Tingting; Tong, Chengguo

doi:10.1016/j.optcom.2013.04.038

Cited by 11 publications

(8 citation statements)

References 23 publications

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“…32 MFs have lots of attractive and peculiar optical properties such as linear birefringence, linear dichroism, Faraday rotation, a strong absorption of light, and a thermal lens effect. 32,33 Although MFs have been used to design novel photonic devices, [32][33][34][35][36][37] the problem of absorption of the transmitted light by Fe 3 O 4 nanoparticles remains, and this will decrease performance. From a different perspective, the strong absorption of light can be used to an advantage.…”

Section: Introductionmentioning

confidence: 99%

All-optical tuning of a magnetic-fluid-filled optofluidic ring resonator

Liu

Shi

et al. 2014

Lab Chip

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An all-optical tunable optofluidic ring resonator (OFRR) is proposed and experimentally demonstrated. The all-optical control of a silica microresonator is highly attractive, but it is difficult to realize because of the relatively weak Kerr effect and the absence of a plasma dispersion effect of silica. Here, we infuse a silica microcapillary-based optofluidic ring resonator with a magnetic fluid, into which pump light is injected by a fiber taper. Iron oxide nanoparticles dispersed in the magnetic fluid produce a strong pump light absorption, and this leads to a resonance shift of the silica microresonator due to the photothermal effect. To the best of our knowledge, this is the first scheme for all-optical tuning of an OFRR. A tuning sensitivity of up to 0.15 nm mW(-1) and a tuning range of 3.3 nm are achieved. With such excellent performance, the magnetic-fluid-filled OFRR has great potential in filtering, sensing, and signal processing applications.

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Section: Introductionmentioning

confidence: 99%

All-optical tuning of a magnetic-fluid-filled optofluidic ring resonator

Liu

Shi

et al. 2014

Lab Chip

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“…Firstly, a preform was fabricated using an assembling method following the usual way in our lab. [32][33][34] Secondly, the prepared preform was then drawn into the optical fiber. Many parameters such as the heating temperature, translation speed, drawing speed and pressure in the hole were controlled during this process.…”

Section: Design and Fabrication Of The Optical Fiber With An Inner Corementioning

confidence: 99%

An in-fiber integrated optofluidic device based on an optical fiber with an inner core

Yang

Yuan

Teng³

et al. 2014

Lab Chip

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A new kind of optofluidic in-fiber integrated device based on a specially designed hollow optical fiber with an inner core is designed. The inlets and outlets are built by etching the surface of the optical fiber without damaging the inner core. A reaction region between the end of the fiber and a solid point obtained after melting is constructed. By injecting samples into the fiber, the liquids can form steady microflows and react in the region. Simultaneously, the emission from the chemiluminescence reaction can be detected from the remote end of the optical fiber through evanescent field coupling. The concentration of ascorbic acid (AA or vitamin C, Vc) is determined by the emission intensity of the reaction of Vc, H2O2, luminol, and K3Fe(CN)6 in the optical fiber. A linear sensing range of 0.1-3.0 mmol L(-1) for Vc is obtained. The emission intensity can be determined within 2 s at a total flow rate of 150 μL min(-1). Significantly, this work presents information for the in-fiber integrated optofluidic devices without spatial optical coupling.

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“…In this regard, photoniccrystal fiber (PCFs) are considered ideal to provide a suitable microstructure into which functional materials can be "filled." It has been reported that stress, temperature, and electric and magnetic fields can be applied to affect the mode field in PCF integrated with media such as lead zirconate titanate, alcohol, liquid crystals, semiconductors, metals, and magnetofluids) [2][3][4][5][6][7]. However, several problems need to be solved in terms of system stabilization and material deposition in these devices.…”

Section: Introductionmentioning

confidence: 99%

Light-controllable fiber interferometer utilizing photoexcitation dynamics in colloidal quantum dot

Gao

Wang

et al. 2018

Opt. Express

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The development of highly efficient light-controlled functional fiber elements has become indispensable to optical fiber communication systems. Traditional nonlinearity-based optical fiber devices suffer from the demerits of complex/expensive components, high peak power requirements, and poor efficiency. In this study, we utilize colloidal quantum dots (CQDs) to develop a light-controlled optical fiber interferometer (FI) for the all-optical control of the transmission spectrum. A specially designed exposed-core microstructure fiber (ECMF) is utilized to form the functional structure. Two types of PbS CQDs with absorption wavelengths around 1180 nm and 1580 nm, respectively, are deposited on the ECMF to enable the functional FI. The wavelength and power of control light are key factors for tailoring the FI transmission spectrum. A satisfactory recovery property and linear relationship between the spectrum shift and the power of control light at certain wavelength are achieved. The highest wavelength shift sensitivity of our light-controlled FI is 4.6 pm/mW, corresponding to an effective refractive index (RI) change of 5 × 10 /mW. We established a theoretical model to reveal that the RI of the CQD layer is governed by photoexcitation dynamics in CQD with the light absorption at certain wavelength. The concentration of charge carriers in the CQD layer can be relatively high under light illumination owing to their small size-related quantum confinement, which implies that low light power (mW-level in this work) can change the refractive index of the CQDs. Meanwhile, the absorption wavelength of quantum dots can be easily tuned via CQD size control to match specific operating wavelength windows. We further apply the CQD-based FI as a light-controllable fiber filter (LCFF) in a 50-km standard single-mode fiber-based communication system with 12.5-Gbps on-off keying direct modulation. Chirp management and dispersion compensation are successfully achieved by using the developed LCFF to obtain error-free transmission. CQDs possess excellent solution processability, and they can be deposited uniformly and conformally on various substrates such as fibers, silicon chips, and other complex structure surfaces, offering a powerful new degree of freedom to develop light control devices for optical communication.

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A capillary optical fiber modulator derivates from magnetic fluid

Cited by 11 publications

References 23 publications

All-optical tuning of a magnetic-fluid-filled optofluidic ring resonator

All-optical tuning of a magnetic-fluid-filled optofluidic ring resonator

An in-fiber integrated optofluidic device based on an optical fiber with an inner core

Light-controllable fiber interferometer utilizing photoexcitation dynamics in colloidal quantum dot

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