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 2015 Top Plant.
The Product of the Year program recognizes products newly released in the manufacturing industries.
Each year, a panel of Control Engineering and Plant Engineering editors and industry expert judges select the System Integrator of the Year Award winners in three categories.
2017 Lubrication Guide; Software tools; Microgrids and energy strategies; Use robots effectively
Prescriptive maintenance; Hannover Messe 2017 recap; Reduce welding errors
Safety standards and electrical test instruments; Product of the Year winners; Easy and safe electrical design
Infrastructure for natural gas expansion; Artificial lift methods; Disruptive technology and fugitive gas emissions
Mobility as the means to offshore innovation; Preventing another Deepwater Horizon; ROVs as subsea robots; SCADA and the radio spectrum
Future of oil and gas projects; Reservoir models; The importance of SCADA to oil and gas
Diagnostic functions for system safety; Specifying industrial enclosures; Effective decision support for a crisis
Transformers; Electrical system design; Selecting and sizing transformers; Grounded and ungrounded system design, Paralleling generator systems
Natural gas for tomorrow's fleets; Colleges and universities moving to CHP; Power and steam and frozen foods

Annual Salary Survey

Before the calendar turned, 2016 already had the makings of a pivotal year for manufacturing, and for the world.

There were the big events for the year, including the United States as Partner Country at Hannover Messe in April and the 2016 International Manufacturing Technology Show in Chicago in September. There's also the matter of the U.S. presidential elections in November, which promise to shape policy in manufacturing for years to come.

But the year started with global economic turmoil, as a slowdown in Chinese manufacturing triggered a worldwide stock hiccup that sent values plummeting. The continued plunge in world oil prices has resulted in a slowdown in exploration and, by extension, the manufacture of exploration equipment.

Read more: 2015 Salary Survey

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.
The maintenance journey has been a long, slow trek for most manufacturers and has gone from preventive maintenance to predictive maintenance.
Featured articles highlight technologies that enable the Industrial Internet of Things, IIoT-related products and strategies to get data more easily to the user.
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.
Maintenance Manager; California Oils Corp.
Associate, Electrical Engineering; Wood Harbinger
Control Systems Engineer; Robert Bosch Corp.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me