Fiber optics boosted by crystalline core
March 01, 2011 // R. Colin Johnson
Researchers at Pennsylvania State University last week demonstrated what they said are the world's first optical fibers to harbor a compound semiconductor core.
The Penn State researchers, led by professor John Badding, demonstrated fiber optic cables with zinc-selenide cores, which they claim have a wider wavelength range and superior photonic qualities to the amorphous core fibers in use today.
"The key advantage is that these fibers operate over a wide wavelength range, specifically into the long IR and, just as importantly, that one can exploit the materials properties of crystalline compound semiconductors," said Badding
According to Badding, using optical fibers with a compound semiconductor core enabled them to perform many of the same amplification and waveguide functions that today are being demonstrated on optical chips, but were impossible for traditional optical fibers with amorphous cores.
"Crystalline compound semiconductors can host transition-metal gain media, which amorphous semiconductors cannot," said Badding. "The fiber cores can also be made smoother and more symmetric than competing planar compound semiconductor waveguides, potentially giving them superior wave-guiding properties."
Application of the new optical fibers, which can work with wavelengths as long as 15 microns, will range from more versatile radar and better countermeasure lasers for the military, to improved medical lasers or surgeons, to better environmental sensors to measure pollutants or to detect the release of chemical agents by terrorists.
Badding performed the work with doctoral candidate Justin Sparks and in collaboration with fellow professors Rongrui He, Mahesh Krishnamurthi, Venkatraman Gopalan along with Pier Sazio, Anna Peacock, and Noel Healy of the Optoelectronics Research Centre at the University of Southampton. Funding was provided by the National Science Foundation, and the Penn State Univerity Materials Research Science and Engineering Center.
High speed DAC for wide bandwidth signal generation
July 30, 2015
The LTC2000 is the latest high speed DAC from Linear Technology. Its low noise and excellent spectral purity make it ideal ...
IBM's Watson to help CVS manage patient health data
3D printing as seen by the engineering community
Green mobility, automation drive power electronics market
Filament bulb replacements: The GaN-on-Silicon LED solution arrives
Saltwater-powered lamp lights up areas with no electricity
July 29, 2015
An LED lamp powered by salt and tap water is being offered as a safer and more efficient means of lighting in areas with ...
Audi to demo OLED exterior lighting at IAA
First color-tunable graphene-based LED is demonstrated
Mobile security report shows malware impacting Android market
- Dual Phase Buck Controller Drives High Density 1.2V/60A Supply with Submilliohm DCR Sensing
- Test environment for the positioning elements of wearable devices
- Automotive Circuit Protection using Littelfuse Automotive TVS Diodes
- Top 5 Challenges for testing Today's Consumer Electronics
InterviewGlobalfoundries' CEO on why FD-SOI and why now
With its latest news Globalfoundries Inc. has not only confirmed itself as a supporter of the fully-depleted silicon-on-insulator (FD-SOI) approach to IC manufacturing but that it also thinks sufficiently ...
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Novelda is giving away two full XeThru Inspiration kits worth 1499 US Dollars each, for EETimes Europe's readers to experiment first hand with its XeThru technology.Based on the use of radio waves, rather than infrared, ultrasound or light, the company's X2M1000 Inspiration modules can detect presence just from the chest movement while breathing, and measure both the rate and... MORE INFO AND LAST MONTH' WINNERS...
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.