Direct Measurement of Large Strains in Synthetic Fiber Mooring Ropes Using Polymeric Optical Fibers

2002 ◽  
Author(s):  
D. Barton Smith ◽  
Jerry G. Williams
Keyword(s):  
Direct Measurement ◽  
Optical Fibers ◽  
Synthetic Fiber ◽  
Large Strains ◽  
Polymeric Optical Fibers

Monitoring Axial Strain in Synthetic Fiber Mooring Ropes Using Polymeric Optical Fibers

2003 ◽  
Author(s):  
D. Barton Smith ◽  
Jerry G. Williams
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Structural Integrity ◽  
Axial Strain ◽  
Time Domain Reflectometry ◽  
Synthetic Fiber ◽  
Load Path ◽  
Integrity Test ◽  
Reliable Technique ◽  
Polymeric Optical Fibers

Synthetic fiber ropes constructed of polyester are providing an important new technology for mooring deep-water drilling and production platforms. Considerable effort is being directed toward advancing and qualifying this enabling and cost-effective technology. To date, synthetic fiber mooring ropes have been successfully deployed in Brazil and they have seen limited service in the Gulf of Mexico. Synthetic fiber mooring ropes have high strength-to-weight ratios and possess adequate stiffness, but they are much more susceptible to damage than their steel counterparts. Future safe deployment of synthetic fiber mooring ropes would be significantly enhanced if a reliable technique were available to monitor the performance of the ropes in service and thus provide an early warning of the loss of structural integrity. Test data in the open literature indicates that the strain in the rope at failure is essentially a constant independent of load path or history. Measurement of the accumulated strain in the rope should thus provide a reliable benchmark with which to estimate the remaining life and establish criteria for rope recertification or retirement. This paper discusses the results of research and development activities aimed at developing a reliable, robust method for monitoring strain in braided and twisted strand Synthetic Fiber Mooring Ropes [1]. The strain transducer is a polymeric optical fiber, integrated into the mooring rope and interrogated with Optical Time-Domain Reflectometry (OTDR) to measure changes in its length as the optical fiber and rope are stressed. The method provides a direct measurement of large axial strains. Strains measured in polymeric optical fibers exhibit good one-to-one correlation with applied strains within the test range studied (10% or less, typically). The integrated polymeric optical fiber has been shown to withstand large numbers of repeated cycles to high strains without failure and to accurately track the hysteresis exhibited by polyester rope. Results are reported for tests conducted with polymeric optical fibers integrated into typical mooring rope elements.

scholarly journals Theoretical Investigation of Oxazine 170 Perchlorate Doped Polymeric Optical Fiber Amplifier

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Piotr Miluski ◽  
Marcin Kochanowicz ◽  
Jacek Żmojda ◽  
Dominik Dorosz
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Organic Dyes ◽  
Fiber Amplifier ◽  
Optical Amplifier ◽  
Optical Signal ◽  
Light Sources ◽  
Optical Fiber Amplifier ◽  
Waveguiding Structure ◽  
Polymeric Optical Fibers

Optical signal amplification in the waveguiding structure of optical fibers can be used for optical telecommunication systems and new light sources constructions. Organic dyes doped materials are interesting for new applications in polymeric optical fibers technology due to their benefits (efficient fluorescence, high absorption cross section, and easy processing). This article presents a numerical simulation of gain in poly(methyl methacrylate) optical fiber doped by Oxazine 170 Perchlorate. The calculated gain characteristic for the used dye molar concentration (0.2·10-6–1.4·10-6) and pump power (1–10 kW) is presented. The fabricated fluorescent polymeric optical fiber is also shown. The presented analysis can be used for optical amplifier construction based on dye-doped polymeric optical fiber (POF).

scholarly journals Optical Properties of the Self-Assembling Polymeric Colloidal Systems

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Alexandra Mocanu ◽  
Edina Rusen ◽  
Aurel Diacon
Keyword(s):  
Optical Fibers ◽  
Optical Materials ◽  
Polymeric Materials ◽  
Cost Effective ◽  
Emerging Technology ◽  
Medical Applications ◽  
Colloidal Systems ◽  
Self Assembling ◽  
Intensity Control ◽  
Polymeric Optical Fibers

In the last decade, optical materials have gained much interest due to the high number of possible applications involving path or intensity control and filtering of light. The continuous emerging technology in the field of electrooptical devices or medical applications allowed the development of new innovative cost effective processes to obtain optical materials suited for future applications such as hybrid/polymeric solar cells, lasers, polymeric optical fibers, and chemo- and biosensing devices. Considering the above, the aim of this review is to present recent studies in the field of photonic crystals involving the use of polymeric materials.

Development of polymeric optical fibers (POF) research in Brazil

2001 ◽  
Author(s):  
Liliana R. Kawase ◽  
Josemir C. dos Santos ◽  
Carlos M. Gibo ◽  
Ricardo M. Ribeiro ◽  
Joao L. P. Canedo ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Polymeric Optical Fibers
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