New fiber overcomes photo-darkening for UV, blue, and green light transmission in bio, medical apps

JANUARY 26, 2009--Fibercore Ltd. (Southampton, England) is targeting high-power medical and biotechnical applications with the launch of its SM300 single-mode fiber at this week's Photonics West exhibition (January 24 - 29). The SM300 is designed for applications such as such as laser Doppler velocimetry (LDV), laser Doppler anenometry (LDA), holography, two-photon spectroscopy, and others requiring a single mode and/or high beam quality to be delivered in ultraviolet, blue, or green wavelengths (300 nm to 560 nm).

Fibercore's new offering addresses the problem of photo-darkening in conventional fibers when transmitting more than a few milliwatts in the ultraviolet, blue, or green portions of the spectrum. The SM300 fiber uses an un-doped silica core with a fluorinated silica cladding rather than a conventional germanium-doped silica core. The advantage of this is that with the vast majority of the power traveling in pure silica, the generation of germania defects that have been so damaging to transmission is no longer an issue. With a cutoff wavelength below 300 nm, the long-wavelength portion of the ultraviolet spectrum is also accessible.

Furthermore, the numerical aperture is relatively low; typically between 0.1 and 0.11, maximizing the model area, minimizing the power density, and increasing the non-linear threshold. This is important in addressing nonlinear, typically Brillouin, scattering.

"SM300 is the first in a planned range of fibers that will include both single mode and polarisation maintaining variants, covering those wavelengths most at risk from photo-darkening between 300 and 532 nm" said Dr Chris Emslie, Managing Director of Fibercore. "Its characteristics enable customers to achieve results that would not be possible from fibers currently available on the market." Fibercore Ltd. is a developer and manufacturer of specialty optical fibers and a U.K.-based subsidiary of Cisco Systems.

More information:
Fibercore Ltd.

Posted by Barbara G. Goode,

Get All the BioOptics World News Delivered to Your Inbox

Subscribe to BioOptics World Magazine or email newsletter today at no cost and receive the latest news and information.

 Subscribe Now
Related Articles

SPECTROSCOPY/EPIDEMIOLOGY: FTIR approach quickly, accurately IDs aggressive Staph bacteria

A new infrared (IR) spectroscopy technique operates without the use of complex antibodies to quickly distinguish between strains of Staphylococcus aureus (S. aureus) bacteria, showing which can cau...

NIR spectroscopy instrument assists in monitoring brain injuries

Researchers at the Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences (IBBE PAS) are developing a near-infrared (NIR) spectroscopy instrument that enabl...

NIR spectroscopy intravascular imaging system receives $25M investment

Medical device maker Infraredx has received a $25 million equity investment from Nipro Corporation, which builds on an exclusive agreement between the two companies for distribution of Infraredx's ...

Raman spectroscopy analyzes lipstick traces non-destructively

Using Raman spectroscopy, it is now possible to identify which brand of lipstick someone was wearing at a crime scene without removing the evidence from its bag, thereby avoiding possible contamina...


Neuro15 exhibitors meet exacting demands: Part 2

Increasingly, neuroscientists are working with researchers in disciplines such as chemistry and p...

Why be free?

A successful career contributed to keeping OpticalRayTracer—an optical design software program—fr...

LASER Munich 2015 is bio-bent

LASER World of Photonics 2015 included the European Conferences on Biomedical Optics among its si...

White Papers

Understanding Optical Filters

Optical filters can be used to attenuate or enhance an image, transmit or reflect specific wavele...

How can I find the right digital camera for my microscopy application?

Nowadays, image processing is found in a wide range of optical microscopy applications. Examples ...



Twitter- BioOptics World

Copyright © 2007-2016. PennWell Corporation, Tulsa, OK. All Rights Reserved.PRIVACY POLICY | TERMS AND CONDITIONS