Holey fiber mode-selective couplers

Bellanca, Gaetano; Riesen, Nicolas; Argyros, Alexander; Leon-Saval, Sergio G.; Lwin, Richard; Parini, Alberto; Love, J.D.; Bassi, Paolo

doi:10.1364/oe.23.018888

Cited by 10 publications

(3 citation statements)

References 28 publications

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“…However, there have been several theoretical and experimental reports of dual (solid) core PCFs with coupled cores [9][10][11][12][13][14][15] . In particular the characteristics of dual solid core PBGFs have been studied and interesting properties such as decoupling of the cores at the shorter wavelength edge of the bandgap and inversion of the usual order of the super-modes with respect to propagation constant were found 12 .…”

Section: Introductionmentioning

confidence: 99%

Dual hollow-core anti-resonant fibres

et al. 2016

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While hollow core-photonic crystal fibres are now a well-established fibre technology, the majority of work on these speciality fibres has been on designs with a single core for optical guidance. In this paper we present the first dual hollow-core anti-resonant fibres (DHC-ARFs). The fibres have high structural uniformity and low loss (minimum loss of 0.5 dB/m in the low loss guidance window) and demonstrate regimes of both inter-core coupling and zero coupling, dependent on the wavelength of operation, input polarisation, core separation and bend radius. In a DHC-ARF with a core separation of 4.3 µm, we find that with an optimised input polarisation up to 65% of the light guided in the launch core can be coupled into the second core, opening up applications in power delivery, gas sensing and quantum optics.

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Section: Introductionmentioning

confidence: 99%

Dual hollow-core anti-resonant fibres

et al. 2016

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“…Recently, scientists are facing many technical challenges with fabricating the kind of fibers with air holes. For instance, omniguide fibers [ 36 ], hollow IR transmitting fibers [ 37 ] and holely fibers [ 38 ] can provide additional functionalities that are not available in other conventional fibers such as solid core fibers. These have unusual guiding structures and can support new light propagation features applicable to novel photonic devices such as lasers and transmitters.…”

Section: Structure Types and Applications Of Optical Fibersmentioning

confidence: 99%

Introduction to Photonics: Principles and the Most Recent Applications of Microstructures

et al. 2018

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Light has found applications in data transmission, such as optical fibers and waveguides and in optoelectronics. It consists of a series of electromagnetic waves, with particle behavior. Photonics involves the proper use of light as a tool for the benefit of humans. It is derived from the root word “photon”, which connotes the tiniest entity of light analogous to an electron in electricity. Photonics have a broad range of scientific and technological applications that are practically limitless and include medical diagnostics, organic synthesis, communications, as well as fusion energy. This will enhance the quality of life in many areas such as communications and information technology, advanced manufacturing, defense, health, medicine, and energy. The signal transmission methods used in wireless photonic systems are digital baseband and RoF (Radio-over-Fiber) optical communication. Microwave photonics is considered to be one of the emerging research fields. The mid infrared (mid-IR) spectroscopy offers a principal means for biological structure analysis as well as nonintrusive measurements. There is a lower loss in the propagations involving waveguides. Waveguides have simple structures and are cost-efficient in comparison with optical fibers. These are important components due to their compactness, low profile, and many advantages over conventional metallic waveguides. Among the waveguides, optofluidic waveguides have been found to provide a very powerful foundation for building optofluidic sensors. These can be used to fabricate the biosensors based on fluorescence. In an optical fiber, the evanescent field excitation is employed to sense the environmental refractive index changes. Optical fibers as waveguides can be used as sensors to measure strain, temperature, pressure, displacements, vibrations, and other quantities by modifying a fiber. For some application areas, however, fiber-optic sensors are increasingly recognized as a technology with very interesting possibilities. In this review, we present the most common and recent applications of the optical fiber-based sensors. These kinds of sensors can be fabricated by a modification of the waveguide structures to enhance the evanescent field; therefore, direct interactions of the measurand with electromagnetic waves can be performed. In this research, the most recent applications of photonics components are studied and discussed.

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“…The vertical coupler structure used in our design can be formed to a high precision easily with polymer material, but is difficult (or impossible) to form with other popular waveguide material systems (e.g., silicon photonics). In fact, polymer material has also been employed by others to realize mode-sensitive devices, such as a planar waveguide two-mode switch [32] and a polymer holey fiber coupler [33]. Fig.…”

Section: Introductionmentioning

confidence: 99%

Compact Three-Dimensional Polymer Waveguide Mode Multiplexer

Dong

Chiang

Jin

2015

J. Lightwave Technol.

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We propose a compact three-dimensional waveguide mode (de)multiplexer based on the configuration of two collocated asymmetrical directional couplers, formed with two dissimilar single-mode cores placed alongside a central rectangular threemode core in the horizontal and vertical directions, respectively. The waveguides are designed to allow the LP 11a and LP 11b modes of the central core to completely couple to the LP 01 modes of the two side cores, respectively, with the LP 01 mode staying in the central core, which is tapered down at one end to strip off any remaining LP 11 modes. We fabricate the device with polymer materials by the conventional microfabrication process. A typical fabricated device, which has a total length of 9.0 mm, shows coupling ratios varying from 91% to 99% for the two LP 11 modes, and crosstalks among the modes in the side cores varying from −23.2 to −14.6 dB in the wavelength range 1530-1570 nm (the C-band). The crosstalks in the central core are negligible. The insertion loss of the device with fiber leads is about 10 dB and the mode-dependent loss is about ±1 dB. The performance of the device is weakly sensitive to the polarization state of light and insensitive to temperature variations. This device can be used in broadband mode-divisionmultiplexing transmission systems based on few-mode fibers.Index Terms-Integrated optics, multiplexing, optical planar waveguide coupler, optical polymer, optical waveguide component.

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Holey fiber mode-selective couplers

Cited by 10 publications

References 28 publications

Dual hollow-core anti-resonant fibres

Dual hollow-core anti-resonant fibres

Introduction to Photonics: Principles and the Most Recent Applications of Microstructures

Compact Three-Dimensional Polymer Waveguide Mode Multiplexer

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