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.
Sony switches to OLEDs to upgrade VR helmet
March 04, 2015
Sony has turned to OLED technology to upgrade the company's Morpheus virtual reality helmet to make PlayStation 4 gameplay ...
Tower makes IR sensor for Intel RealSense
Polymer blend improves solar cell efficiency by 200 percent
Stress tracker tames drivers
Glass coated cathode promises lithium-sulfur battery performance gains
Femtocell improves in-car mobile connectivity
March 03, 2015
In a joint effort, carmaker BMW, communications equipment vendor Peiker Acoustic and consulting company Nash Technology have ...
Study: Autonomous driving changes cities and auto industry
Cisco, Deutsche Telekom and Intel to help IoT startups
Opinion: The NXP/Freescale takeover and automotive electronics
- High Performance Portable DC Bench Power Supply: Save Money and Free Up Bench Real Estate by Building Your Own
- Software-Defined Radio Handbook
- A Four-Quadrant DC/DC Switching Regulator Smoothly Transitions from Positive to Negative Output Voltages for FPGA and Other Applications
- LED Driver with Integrated Spread Spectrum Reduces EMI without Adding Flicker
InterviewInfineon: CAN FD success goes at the expense of FlexRay
The faster version of the venerable CAN bus, CAN FD is currently taking off at several carmakers. Infineon's Thomas Böhm, Head of Body / Automotive, believes this could well go at the expense of FlexRay. ...
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
To ensure you have a good start in 2015, Freescale is giving away five of its QorIQ TWR-LS1021A Tower system modules, worth USD269 each, for EETimes Europe's readers to win.
The module is the most feature-rich and high-performance Tower system offered by Freescale, enabling compatibility and interoperability with the growing list of Tower expansion modules, offering an easily accessible...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.