The University of Southampton

Saudi Arabian Oil Company

John Richard Hayes

Francesco Poletti

David John Richardson

Sameeh Issa Batarseh

Damian Pablo San Roman Alerigi

Natalie Wheeler

Callum Smith

Hesham Sakr

Hans Christian Hansen Mulvad

Shaif-ul Alam

Lin Xu

Gregory Teofil Jasion

Thomas David Bradley

Eric Rodrigue Numkam Fokoua

Yong Chen

Marco Petrovich

Mubassira B Syed Nawazuddin

Natalie Violet Wheeler

An optical fiber has corrugations on an outer surface to dissipate a portion of an input light beam, allowing the remaining portion of the light beam to be coupled to the optical fiber. By dissipating the portion of input light, damage to the optical fiber by uncoupled light is reduced.

Optical fiber with corrugations

A nested anti-resonant nodeless hollow core fiber (NANF) enables transmission of multi-kilowatt, continuous wave (CW) light beams operating in wavelengths between 1050 nm and 1100 nm provided by single mode lasers. Such a NANF has little loss over kilometer ranges, and can be employed in long distance subsurface applications, such as in the petroleum industry.

Nested anti-resonant nodeless optical fiber and subsurface system using the same

A preform () for an antiresonant hollow core optical fibre comprises an outer jacket tube () having an inner surface and a central longitudinal axis (); a plurality of antiresonant cladding tubes () spaced apart at predefined peripheral locations around the inner surface of the outer jacket tube (), each antiresonant cladding tube () in contact with the inner surface such that a central longitudinal axis () of each antiresonant cladding tube () is at a first radial distance from the central longitudinal axis () of the outer jacket tube (); and a plurality of spacing elements () disposed alternately with the antiresonant cladding tubes () and each in contact with an outer surface of each of two adjacent antiresonant cladding tubes () at one or more contact points (), the contact points () at a second radial distance from the central longitudinal axis () of the outer jacket tube (), the second radial distance being greater than the first radial distance.

Antiresonant hollow core preforms and optical fibres and methods of fabrication

A method of fabricating a hollow-core photonic-bandgap fiber, comprising the steps of: providing a stack of capillaries, wherein the stack has a hollow core and the capillaries at a boundary of the core comprise a plurality of first, corner core capillaries and a plurality of second, intermediate core capillaries; applying a pressure differential between the corner core capillaries and the intermediate core capillaries, whereby a size of the corner core capillaries can be controlled in relation to the intermediate core capillaries; and reducing the stack to a fiber, wherein the fiber has a hollow core and a cladding which surrounds the core at a core boundary and comprises a lattice or network of struts and interstitial nodes which together define an array of cavities.

Hollow-core photonic bandgap fibers and methods of manufacturing the same

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Fordingbridge, United Kingdom

John Richard Hayes