Download Holey Fibers

Holey Fibers
Suchita Kaundin
Agenda









Background
What are Holey Fibers
Physical Structure
Fabrication
Properties
Advantages
Applications
Industries
References
Background


Initially, the photonic bandgap was the only guiding
mechanism in the new class of optical fibers
By micro structuring and including airholes in the fiber
and using total internal reflection property, these
devices could provide revolutionary features
What are Holey Fibers

Holey Fibers are microstructured optic fibers that
possess a solid core surrounded by a cladding region
defined by a fine array of air holes that extend along
the fiber length
 Holey fibers guide light due to effective refractive
index difference between core and cladding regions
and can be made from a single material typically
silica
Physical Structure

Holey fibers are created by stacking tiny hollow glass
tubes around a small solid glass rod forming a
cylinder 3cm across and a meter long
 Each hole can be less than a micron in diameter
 The positioning and size of the hole affect the way
light is being transmitted
 By introducing holes which are of a similar size to the
wavelength of light, light of different wavelengths can
be passed.
Fabrication




Fabricated by stacking an array of capillaries in a
hexagonal configuration around a solid rod which
forms the core
The resulting preform is reduced to fibre dimensions
using a conventional fibre drawing tower
A range of fiber profiles can be produced from a single
preform by controlling the conditions under which the
fiber is drawn
For large scale reduction factors for certain
applications the microstructured region may be
overclad with a solid jacket
Properties




Endless single mode guidance
Large mode area
Non linearity tailoring
Dispersion
Advantages



Endlessly single mode operation- Short wavelength
applications
Large mode area up to hundreds of μm2- Makes
fabrication process faster
Anomalous and zero dispersion below 1.3 μm (at
visible)- Makes generation of optical solitons in the
near IR and visible regions.
Applications

Applications in electronic equipments, multiplexers,
computers, video devices, Vehicle control systems
where high speed optical data transfer is essential
 Can enable powerful laser surgery and effective laser
machining
 Optical switches and sensor applications
 Pollution sensing: Putting the fiber into a liquid or
driving gas through it and then seeing how light shone
through the fiber is affected could give fast and
accurate information about pollutant characteristics
Industries





Corning Inc.
BlazePhotonics design
Crystal Fiber
INO
Omniguide Communications
References





Holey Fibers : Properties,Applications & Future Directions
by Optoelectronics Research Centre,University of
Southampton
http://fibers.org/articles/news/5/4/1/1
http://www.opticallynetworked.com/features/article.php/72406
1
http://www.ecpe.vt.edu/news/ar03/holeyfib.html
http://www.lightreading.com/document.asp?doc_id=21449
THANK YOU