VCSEL engineer gets 2011 IEEE David Sarnoff Award for GB Ethernet research

C.J. Chang-Hasnain has been recognized for her contributions to Vertical Cavity Surface Emitting Lasers by the IEEE. Her demonstration of the first gigabyte-per-second multimode VCSEL transmission using a multimode optical fiber became the prototype of today’s Ethernet technology.

04/29/2011


C.J. Chang-Hasnain, an engineer whose groundbreaking contributions to the physics and design of Vertical Cavity Surface Emitting Lasers (VCSELs) have reportedly shaped their use in modern technology, has been honored by IEEE with the 2011 IEEE David Sarnoff Award.

The award, sponsored by Sarnoff Corporation, recognized Chang-Hasnain for pioneering contributions to VCSEL arrays and tunable VCSELs. The award was presented on March 8th, 2011 at the Optical Fiber Communication Conference and Exposition/National Fiber Optic Engineers Conference in Los Angeles, Calif.

Chang-Hasnain’s seminal contributions have been instrumental in establishing VCSELs as the dominant technology for multimode fiber applications, according to IEEE. And her work has had a profound influence on commercial tunable, high-speed and laser array designs. VCSELs reportedly comprise more than 75% of today’s laser market, dominating the high-volume, low-cost and short-distance laser sectors. They can be turned on and off very fast, at billions of times per second, but yet manufactured at very low cost in wafer-scale. VCSELs are now used in applications ranging from Ethernet data networks to computer mice to laser printers. Allegedly, most local area networks and large-scale data centers supporting Internet traffic use VCSELs.

Chang-Hasnain’s invention and integration of Micro-Electro-Mechanical Systems (MEMS) and photonic systems created a new class of optoelectronic devices. Chang-Hasnain explained the modal structure of VCSELs and demonstrated the first planar structure, which was commercialized. Her demonstration of the first gigabyte-per-second multimode VCSEL transmission using a multimode optical fiber became the prototype of today’s Ethernet technology, according to IEEE. She was reportedly the first to demonstrate that VCSEL arrays can be designed to have a precise wavelength variation to form a 140-wavelength array. She also showed that VCSELs can be used for wavelength-division multiplexing applications.

Chang-Hasnain demonstrated the first realizable tunable VCSEL structure with a wide tuning range. Tunable lasers allow the wavelength to be altered in a controlled manner. She later invented a high-contrast grating that led to a tunable laser with a 40x improvement in speed. Overall, her developments concerning wavelength-engineered VCSELs have resulted in tunable lasers that accomplish both a wide range and continuous tuning simultaneously.

An IEEE Fellow Chang-Hasnain is a National Security Science and Engineering Faculty Fellow, a Guggenheim Fellow, an Honorary Member of A.F. loffe Institute (Russia) and a Chang-Jiang Scholar at Tsinghua University, China.  She holds 37 patents and has published over 400 papers. Prof. Chang-Hasnain has been the editor-in-chief of the Journal of Lightwave Technology since 2007. Her awards include the IEEE Photonics Society’s William Streifer Scientific Achievement Award, the Optical Society of America’s Nick Holonyak Jr. Award, and the Humboldt Research Award. She received a bachelor’s degree from the University of California, Davis, and master’s and doctorate degrees from the University of California, Berkeley, all in electrical engineering and computer science. She is currently the John R. Whinnery Chair Professor of Electrical Engineering and Computer Science at the University of California, Berkeley.

www.ieee.org

IEEE

- Edited by Amanda McLeman, Control Engineering, www.controleng.com



No comments
The Top Plant program honors outstanding manufacturing facilities in North America. View the 2013 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
The true cost of lubrication: Three keys to consider when evaluating oils; Plant Engineering Lubrication Guide; 11 ways to protect bearing assets; Is lubrication part of your KPIs?
Contract maintenance: 5 ways to keep things humming while keeping an eye on costs; Pneumatic systems; Energy monitoring; The sixth 'S' is safety
Transport your data: Supply chain information critical to operational excellence; High-voltage faults; Portable cooling; Safety automation isn't automatic
Case Study Database

Case Study Database

Get more exposure for your case study by uploading it to the Plant Engineering case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.

These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.

Click here to visit the Case Study Database and upload your case study.

Maintaining low data center PUE; Using eco mode in UPS systems; Commissioning electrical and power systems; Exploring dc power distribution alternatives
Synchronizing industrial Ethernet networks; Selecting protocol conversion gateways; Integrating HMIs with PLCs and PACs
Why manufacturers need to see energy in a different light: Current approaches to energy management yield quick savings, but leave plant managers searching for ways of improving on those early gains.

Annual Salary Survey

Participate in the 2013 Salary Survey

In a year when manufacturing continued to lead the economic rebound, it makes sense that plant manager bonuses rebounded. Plant Engineering’s annual Salary Survey shows both wages and bonuses rose in 2012 after a retreat the year before.

Average salary across all job titles for plant floor management rose 3.5% to $95,446, and bonus compensation jumped to $15,162, a 4.2% increase from the 2010 level and double the 2011 total, which showed a sharp drop in bonus.

2012 Salary Survey Analysis

2012 Salary Survey Results

Maintenance and reliability tips and best practices from the maintenance and reliability coaches at Allied Reliability Group.
The One Voice for Manufacturing blog reports on federal public policy issues impacting the manufacturing sector. One Voice is a joint effort by the National Tooling and Machining...
The Society for Maintenance and Reliability Professionals an organization devoted...
Join this ongoing discussion of machine guarding topics, including solutions assessments, regulatory compliance, gap analysis...
IMS Research, recently acquired by IHS Inc., is a leading independent supplier of market research and consultancy to the global electronics industry.
Maintenance is not optional in manufacturing. It’s a profit center, driving productivity and uptime while reducing overall repair costs.
The Lachance on CMMS blog is about current maintenance topics. Blogger Paul Lachance is president and chief technology officer for Smartware Group.