Fiber Optics
Fiber Optics
Assignment
Many modern medical materials and equipment work on a principle which is beyond the capacity of human transducers.
Comment and discuss the working principles of an endoscope, uteroscope or a rectoscope showing the illuminating path, the image path, transmission path and the liquid transfer or operating instrument ducts, showing the position of suitable valves.
This will therefore explain how light travels through an optical fibre and show how such fibres are used in medicinal equipment either to transmit light or to bring back images from within a patient.
Contents
Fibre Optics
Fibre-Optic Bundles
Coherent and Incoherent Bundles
Transimission efficiency and resolution
Types of Fibres: Single mode or Multimode ?
Fibre Properties
Fibre-Optic Endoscopy
Introduction
The Fibre-Optic Endoscope
Some Applications for Fibre-Optic Endoscopy
References
Fibre Optics
A relatively new technology with vast potential importance, fibre optics, is the channelled transmission of light through hair-thin glass fibres.
The clear advantages of fibre optics are too often obscured by concerns that may have been valid during the pioneering days of fibre, but that have since been answered by technical advances.
Fibre is fragile
An optical fibre has greater tensile strength than copper or steel fibres of the same diameter. It is flexible, bends easily, and resists most corrosive elements that attack copper cable. Optical cables can withstand pulling forces of more than 150 pounds.
Fibre is hard to work with
This myth derives from the early days of fibre optic connectors. Early connectors where difficult to apply; they came with many small parts that could tax even the nimble fingered. They needed epoxy, curing, cleaving and polishing.
On top of that, the technologies of epoxy, curing, cleaving and polishing were still evolving.
Today, connectors have fewer parts, the procedures for
Assignment
Many modern medical materials and equipment work on a principle which is beyond the capacity of human transducers.
Comment and discuss the working principles of an endoscope, uteroscope or a rectoscope showing the illuminating path, the image path, transmission path and the liquid transfer or operating instrument ducts, showing the position of suitable valves.
This will therefore explain how light travels through an optical fibre and show how such fibres are used in medicinal equipment either to transmit light or to bring back images from within a patient.
Contents
Fibre Optics
Fibre-Optic Bundles
Coherent and Incoherent Bundles
Transimission efficiency and resolution
Types of Fibres: Single mode or Multimode ?
Fibre Properties
Fibre-Optic Endoscopy
Introduction
The Fibre-Optic Endoscope
Some Applications for Fibre-Optic Endoscopy
References
Fibre Optics
A relatively new technology with vast potential importance, fibre optics, is the channelled transmission of light through hair-thin glass fibres.
The clear advantages of fibre optics are too often obscured by concerns that may have been valid during the pioneering days of fibre, but that have since been answered by technical advances.
Fibre is fragile
An optical fibre has greater tensile strength than copper or steel fibres of the same diameter. It is flexible, bends easily, and resists most corrosive elements that attack copper cable. Optical cables can withstand pulling forces of more than 150 pounds.
Fibre is hard to work with
This myth derives from the early days of fibre optic connectors. Early connectors where difficult to apply; they came with many small parts that could tax even the nimble fingered. They needed epoxy, curing, cleaving and polishing.
On top of that, the technologies of epoxy, curing, cleaving and polishing were still evolving.
Today, connectors have fewer parts, the procedures for
References: Pope, Jean A.; Medical Physics 2nd r.e. Heinemann Educational Printers 1973. Brown, B. H. , Smallwood R. H.; Medical Physics and Physiological Measurement; Blackwell Scientific Publications, Billing and Son 's Publishers; 1981.