Navigation Links
Singapore researchers invent broadband graphene polarizer
Date:6/6/2011

Researchers at the National University of Singapore have invented a graphene-based polarizer that can broaden the bandwidth of prevailing optical fibre-based telecommunication systems.

The graphene research team, led by Professor Kian Ping Loh at the National University of Singapore, invented an ultra-slim broadband polarizer that uses graphene, a single-atomic-layer crystallized carbon, to convert light beam into polarized light. This is the first experimental demonstration of using graphene as an ultrathin waveguide to couple and modulate light. Light modulation by means of polarization management is vital to avoid signal fading and error in coherent optical communications as well as optical gyroscopes and interferometric sensors.

In principle, the polarizing ability of graphene covers the telecommunication bands from visible to mid-infrared. This means that graphene polarizer can provide all-in-one solution for multiple-channel high-speed optical communications, the researchers said.

The researchers skilfully transferred graphene grown by chemical vapour deposition on the side-polished optical fibre to fabricate the graphene polarizer and measured light polarization at different wavelengths. Unlike polarizers made from thin metal film or semiconductor dielectric, a graphene polarizer has the unique ability to filter out transverse-magnetic-mode and supports transverse-electric-mode surface wave propagation.

The broadband graphene polarizer work was published in the journal Nature Photonics and appeared online on 29 May 2011. Source: http://www.nature.com/nphoton/journal/vaop/ncurrent/full/nphoton.2011.102.html

"The results reported in this paper can have a strong impact in the development of graphene-based optical devices for photonic applicationsthe science behind it is excellent" says professor Antonio Castro Neto of National University of Singapore.

The Singapore team has earlier pioneered graphene mode-locked lasers in 2009. This work was another breakthrough in bringing graphene photonics a step closer to real applications.

"In the near future, we can envision ultrathin graphene-based photonic circuits with multiple functions of light creation, routing, modulation or detection," said Dr. Qiaoliang Bao, who is the project leader of the pioneering work.


'/>"/>

Contact: Tsuey Ling Yong
sciytl@nus.edu.sg
656-516-7874
National University of Singapore
Source:Eurekalert

Related biology technology :

1. Singapore to hold international pow-wow
2. Singapore Medicine - Breakthrough Development of Cell Therapy Treatment for Cancer
3. Singapore Medicine - Singapore Doctors Use Hi-Tech Implant to Add Space to Narrowed Spinal Canals
4. YM BIOSCIENCES NIMOTUZUMAB SELECTED FOR MULTINATIONAL PHASE III TRIAL BY NATIONAL CANCER CENTRE OF SINGAPORE
5. Alliance Biosciences Announces Trade Mission to Singapore with Speaker Presentation at International Lab Design Seminar
6. S*BIO Receives BioSpectrum Editors Choice, Emerging BioScience Company of Singapore Award
7. PAREXEL Receives BioSingapore Award for Best Performing CRO
8. Moleac Named Singapore Entrepreneurial Company of the Year at the Frost & Sullivan Excellence in Healthcare Awards
9. Biomedical Sciences Companies Expanding in Asia Invested More Than US$500 Million in Singapore
10. Pharma and Biotech Companies Plug into Singapores Integrated Research Network
11. ICON Central Laboratories in Singapore Moves to New Facility to Meet Growing Demand
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/19/2017)... 19, 2017 AquaBounty Technologies, Inc. (AIM: ABTU; ... in aquaculture and a majority-owned subsidiary of Intrexon Corporation ... completed the listing of its common shares on the ... Intrexon. "AquaBounty,s listing on NASDAQ represents an ... exposure to the U.S. markets as we advance plans ...
(Date:1/19/2017)... ... January 19, 2017 , ... FireflySci Inc. is a go-getter type of ... growth is accounted to two main factors. The first is the amazing customer ... vendors supplying FireflySci products all around the world. , 2016 was a tremendous sales ...
(Date:1/19/2017)... BETHESDA, Md. , Jan. 18, 2017  Northwest ... company developing DCVax® personalized immune therapies for operable and ... Marnix Bosch , Chief Technical Officer of NW Bio, ... Thursday, January 19, 2017, at the Hyatt Regency Hotel ... Dr. Bosch will chair the session entitled "New Therapeutic ...
(Date:1/18/2017)... ... January 18, 2017 , ... ... device-to-computer interconnect using USB or PCI Express, announced the ZEM5310 USB 3.0 FPGA ... FPGA into a compact business-card sized form factor suitable for prototyping, testing, and ...
Breaking Biology Technology:
(Date:12/15/2016)... VANCOUVER, Canada and BADEN-BADEN, Germany ... Solutions, a leading global financial services provider, today announced an ... in passive behavioural biometrics, to join forces. The partnership will ... fraud mitigation strategies in compliance with local data protection regulation. ... In ...
(Date:12/15/2016)... 2016  There is much more to innovative access ... engine. Continental will demonstrate the intelligence of today,s solutions ... . Through the combination of the keyless entry and ... elements, the international technology company is opening up new ... "The integration of biometric elements brings our ...
(Date:12/8/2016)... Calif. , Dec. 8, 2016  Singulex, Inc., ... Molecule Counting technology, entered into a license and supply ... serving science. The agreement provides Singulex access to Thermo ... Europe is used to diagnose systemic ... United States to aid in assessing the ...
Breaking Biology News(10 mins):