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:7/27/2017)... ... July 27, 2017 , ... A luxury car manufacturer ... popular corporate team building events this summer. , Each team gathered ... competition to whet their palettes. Three teams were then formed, and each ...
(Date:7/27/2017)... RESEARCH TRIANGLE PARK, N.C., July 27, 2017 ... today announced its financial results for the second ... "Our second quarter total net revenues ... level ever," said Martine Rothblatt, Ph.D., United Therapeutics ... believe that Orenitram is well-positioned given the large ...
(Date:7/26/2017)... ... 2017 , ... CardioWise, Inc. , is pleased to ... analysis software, and an associated pending patent from Johns Hopkins Technology Ventures through ... uses high resolution cardiac CT to analyze cardiac wall motion that provides extraordinary ...
(Date:7/26/2017)... ... July 26, 2017 , ... Franz ... Semantic Graph Database technology for Knowledge Graphs, today announced Gruff v7.0 , ... Gruff provides novice users and graph experts the ability to visually build queries ...
Breaking Biology Technology:
(Date:4/13/2017)... According to a new market research report "Consumer IAM Market ... Authorization), Service, Authentication Type, Deployment Mode, Vertical, and Region - Global Forecast ... from USD 14.30 Billion in 2017 to USD 31.75 Billion by 2022, ... ... MarketsandMarkets Logo ...
(Date:4/11/2017)... , Apr. 11, 2017 Research and ... Market 2017-2021" report to their offering. ... The global eye tracking market to grow at a ... report, Global Eye Tracking Market 2017-2021, has been prepared based on ... covers the market landscape and its growth prospects over the coming ...
(Date:4/11/2017)... 2017 NXT-ID, Inc. (NASDAQ:   NXTD ... the appointment of independent Directors Mr. Robin D. Richards ... of Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief ... to their guidance and benefiting from their considerable expertise as ...
Breaking Biology News(10 mins):