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发帖数: 507 | 1 From today's NY Times:
Tingye Li （厉鼎毅）, Instrumental in the Laser’s Development, Dies at 81
Tingye Li, an electrical engineer whose calculations in the early 1960s
helped guide the development of the laser and propel the dizzying increase
in the speed of fiber-optic communication, died on Dec. 27 in Snowbird, Utah
. He was 81.
Family photo
Some of the work done by Dr. Tingye Li and his colleagues at Bell Labs laid
the groundwork for today’s broadband.
The cause was a heart attack while he was on a family ski trip, his family
said. He lived in Boulder, Colo.
Lasers were in the early stage of development when Dr. Li and a colleague at
Bell Labs, A. Gardner Fox, developed a computer simulation of how lasers
produce the focused light energy that has transformed fields from medicine
to space travel. They reported their findings in a paper published in 1961.
Dr. Arno Penzias, a former director of Bell, called their paper a tool kit
for subsequent designers of lasers and other optical systems. He said it
helped transform the “wonderful invention” of the laser — the word is an
acronym for light amplification by stimulated emission of radiation — into
“a practical communications platform.”
In essence, the researchers provided a mathematical model for how light
bounces about inside a laser between two mirrors as it gathers energy,
predicting factors like the shape and intensity of light beams. Alan Willner
, an electrical engineering professor at the University of Southern
California, called the work “the foundational teaching” on the innards of
lasers.
“There aren’t many papers that help define a field, but this was one of
them,” he said in an interview.
The research that led to nearly instantaneous communication by light waves
was itself snail-like. Dr. Li and Dr. Fox had to write their own programs,
punching them into decks of cards, for a room-size computer that was less
powerful than a palm-size calculator today. The computer ran the program for
two or three hours. A frequent error message meant that the researchers had
to scour the cards for a single improperly punched letter, Jeff Hecht wrote
in “Beam: The Race to Make the Laser” (2010).
Bell Labs was virtually unchallenged as the largest and most inventive
laboratory in the world, having a hand in many of the 20th century’s most
important inventions. Dr. Li, who wrote or helped write more than 100 papers
, patents and books, led research teams at Bell for more than three decades.
Some of their work laid the groundwork for today’s broadband. One area of
study was in finding ways to use light waves to convey information on
optical fiber rather than copper wire or radio waves. Another team Dr. Li
led developed optical amplifiers, which amplify an optical signal directly
without the need to first convert it into an electrical signal.
Dr. Li was an early proponent of using the rare earth metal Erbium in the
amplifiers, an improvement that helped raise their capacity more than a
hundredfold.
“Tingye Li has shaped the lightwave network infrastructure we know today,”
the Institute of Electrical and Electronics Engineers said when presenting
him with its Edison Medal in 2009.
Li Ding Yi, as his name is transliterated from Chinese, was born in Nanking,
China, on July 7, 1931. His mother, Lily, belonged to the first generation
of Chinese women to receive a modern higher education. She became an
activist for women’s rights.
His father, Chao, was a Chinese diplomat who was consul general in Vancouver
, where Tingye attended middle school, and was later posted to South Africa,
where Tingye earned an undergraduate degree in electrical engineering from
the University of Witwatersrand. He earned a Ph.D. in electrical engineering
from Northwestern University in Evanston, Ill.
Dr. Li joined the Bell Telephone Laboratories (later AT&T Bell Laboratories)
in 1957 and worked there until 1998. He worked there with the Nobel Prize
recipients Charles Hard Townes and Arthur L. Schawlow, who together invented
the maser, which amplified microwaves the way lasers would soon amplify
light.
“There was a lot going on and a lot of people helping each other,” Dr.
Penzias said.
Dr. Li often quoted Confucius, though friends suspected he occasionally
concocted his own learned sayings and then attributed them to the sage. He
frequently went to China to help it develop optical communications. The
Chinese Academy sent his family a letter at his death praising him for
helping China “leapfrog to a higher level” in handling telecommunications
traffic.
Dr. Li is survived by his wife of 56 years, the former Edith Wu; his
daughters, Deborah Li Cohen and Kathryn Li Dessau; and four grandchildren.
In a speech on his 80th birthday, Dr. Li revealed that he had proposed
marriage to his wife for their next life, after they are both reincarnated.
She tentatively agreed, he said, if he behaved.
Tingye Li - Wikipedia, the free encyclopedia
Dr. Tingye Li (simplified Chinese: 厉鼎毅; traditional Chinese: 厲鼎毅;
pinyin: Lì Dǐngyì July 7, 1931 – December 27, 2012) was a world-renowned
scientist in the fields of microwaves, lasers and optical communications.
His innovational work at AT&T, which pioneered the research and application
of lightwave communication, has had a far-reaching impact on information
technology for over four decades.[1]
[edit] Education and Research
Tingye Li was born on July 7, 1931[2] in Nanjing, Jiangsu Province, the
eldest son of a diplomat. His father was a senior officer of the Chinese
Foreign Ministry (Before 1949, the Republic of China) and had served as an
ambassador to several countries. At the age of 12, Li left China to join his
father in Canada, where he lived for several years before moving to the
United States of America.
He obtained his bachelor’s degree from the University of Witwatersrand, and
his Ph. D. fromNorthwestern University. After graduation, he began working
at Bell Telephone Laboratories (later AT&T Bell Laboratories) in 1957, and
worked there for 41 years until his retirement from AT&T Labs in 1998.
During that time, he wrote and contributed to many journal papers, patents,
and books in the areas of antennas, microwave propagation, lasers and
optical communications.
In 1961, Li and his colleague A. Gardner Fox published a paper titled
Resonant modes in a maser interferometer, which showed that "a laser beam
bouncing back and forth between a pair of mirrors can resonate for a number
of modes of energy distribution and for each of these traverse modes there
is a different characteristic phase velocity and attenuation per transit."
They usedcomputer simulation techniques to obtain their data. This work was
the first to point out that an open-sided resonator containing a laser
medium should have unique modes of propagation, which is fundamental to the
theory and practice of lasers. This work is now considered a classic and has
been cited over 595 times (SCI) since its publication in 1961 until 1979
when Mr. Fox recalled and gave some remarks on their work.
From the late 1960s, Li engaged in pioneering research on lightwave
technologies and systems, which are now ubiquitously deployed in the
telecommunications industry. In the late 1980s, when the whole world’s
attention on optical communication was still focused on a single-channel
high speed solution, he and his team developed the world’s first (sparse
channel) WDM (Wavelength Division Multiplexing) system at AT&T Bell Labs.
With the understanding that a technique that can only be put into real use
if it remains backwards-compatible with existing technology, he (and his
team) proposed and studied the use of optical amplifiers in WDM systems,
which utilized the existing embedded base to create virtual fibers by
putting more channels onto a single fibre. Their experiment in 1992 at
Roaring Creek turned out to be a "roaring success" as Li claimed in an
interview, allowing 2.5 Gbit/s transmission per channel, the highest rate
available at the time. The use of optical amplifiers changed the paradigm of
network economics and is considered to be of revolutionary significance (
though evolutionary in design) in the history of lightwave communications.
Li was active in a number of academic societies. He was the initiator of
many conferences in optical communication and has often been invited to give
plenary speeches. Because of his outstanding contribution and spirit of
service, he was elected the President of the Optical Society of America (OSA
) in 1995. He was also a member of the National Academy of Engineering,
theAcademia Sinica (Taiwan) and the Chinese Academy of Engineering.
Years at AT&T
Division Position Years
Radio Research Department Researcher 1957–1967
Repeater Techniques Research Department Director 1967–1976
Lightwave Media Research Department Director 1976–1984
Lightwave Systems Research Department Director 1984–1996
AT&T Labs-Research, Communications
Infrastructure Research Laboratory Division Manager 1996–1998
AT&T Consultant 1999–2002
[edit] Chinese heritage
Dr. Tingye Li’s father (simplified Chinese: 厉斯昭; traditional Chinese: 厲
斯昭; pinyin: Lì Sīzhāo) had served in the Chinese government for many
years. His mother (simplified Chinese: 谢纬鹏;traditional Chinese: 謝緯鵬;
pinyin: Xìe Wěipéng) was one of the first generation of Chinese women who
received a modern higher education, and was an activist in the Chinese
women’s liberation movement. His father-in-law K. C. Wu (traditional
Chinese: 吳國楨; simplified Chinese:吴国桢; pinyin: Wú Gúozhēn; Wade–
Giles: Wu Kuo-Chen) is an important figure in China's modern history and was
a governor of Taiwan province. Dr. Li has also made a great contribution to
the development of China’s optical communication industry. He became one
of the first batch of specially hired experts of the Chinese State Council,
participating in major state science and technology decision-making. He has
also introduced lots of world-class experts to lecture in China, bringing to
the country the state-of-art technology in optical communication. Thanks to
his effort, the research and application of optical communication in China
has made a great progress in the recent 20 years. He was named an honorary
professor at many universities in China (includingTsinghua University,
Peking University, Shanghai Jiao Tong University, Beijing University of
Posts and Telecommunications, Northern Jiaotong University, Fudan University
, Nankai University, Tianjin University, University of Electronic Science
and Technology of China, andQufu Normal University), and was granted an
honorary Doctor of Engineering degree by National Chiao Tung University in
Taiwan.
[edit] Philosophy
Li has said that developing components and devices must involve good
understanding of systems applications and systems economics. This
methodology was reflected in his introduction of optical amplifiers in WDM
which offered network providers a graceful upgrade. Li has also mentored
many younger colleagues, and was known to many as "Uncle Tingye."
[edit] Personal
Li's speeches, even on some dull technical topics, are known to be quite
entertaining. One example was at the ITCom 2001 conference, where he gave a
talk titled "Crouching Technologies and Hidden Profits", a play on the film
"Crouching Tiger, Hidden Dragon".
Dr. Tingye Li lived with his wife Edith Wu (simplified Chinese: 吴修惠;
traditional Chinese: 吳修惠; pinyin: Wú Xīuhuì) in Boulder, Colorado. He
was an independent consultant in the field of lightwave communications. His
brother Ting-Kai Li (simplified Chinese: 厉鼎凯; traditional Chinese: 厲鼎凱
; pinyin: Lì Dǐngkaǐ) is a prominent medical scientist and was the
director of theNational Institute on Alcohol Abuse and Alcoholism (NIAAA)
from 2002 till 2008.[3][4] His brother-in-law is Sherman Wu, well known for
his struggles against racism at Northwestern University.
He died in 2012 in Snowbird, Utah.[5][6]
[edit] Quotation
"Photonics is a 40-year overnight success."
"If winter comes, can spring be far behind?"
- Tingye Li at OFC '02, adapted from "Ode to the West Wind", by Percy Bysshe
Shelley
"I only hire people smarter than I."
[edit] Awards and honors
Optical Fiber Communications: Fiber Fabrication, Tingye Li, 1985
Topics in Lightwave Transmission Systems, Tingye Li, 1991
Optical Fiber Telecommunications IV-A : Components, Ivan P. Kaminow and
Tingye Li, 2002
Optical Fiber Telecommunications IV-B : Systems and Impairments, Ivan P.
Kaminow and Tingye Li, 2002
[edit] References
^ "Tingye Li". IEEE Global History Network. IEEE.http://www.ieeeghn.org/wiki/index.php/Tingye_Li. Retrieved 25 July 2011.
^ [1]
^ "Ting-Kai Li, M.D. Named New Director of NIH’s Alcohol Research Institute
". News releases. National Institute on Alcohol Abuse and Alcoholism.
September 10, 2002.http://www.niaaa.nih.gov/news-events/news-releases/ting-kai-li-md-named-new-director-nih-alcohol-research-institute. Retrieved January 4, 2013.
^ Warren, Kenneth R.. "Director's Page". National Institute on Alcohol Abuse
and Alcoholism. http://www.niaaa.nih.gov/about-niaaa/our-staff/directors-page. Retrieved January 4, 2013.
^ "Tingye Li, laser pioneer and optical fibers expert, dies at 81". SPIE
Newsroom. SPIE. December 28, 2012. http://spie.org/x91732.xml. Retrieved December 30, 2012.
^ "OSA Mourns the Loss of Tingye Li, 1931-2012, OSA Past President". News
Releases.Optical Society. December 30, 2012. http://www.osa.org/en-us/about_osa/newsroom/newsreleases/2012/osa_mourns_the_loss_of_tingye_li,_1931-2012,_osa_p/. Retrieved December 30, 2012.
^ "IEEE W.R.G. Baker Prize Paper Award Recipients". IEEE.http://www.ieee.org/documents/baker_rl.pdf. Retrieved January 4, 2011 (2011-01-04).
^ "Award Winners - John Tyndall Award". IEEE Photonics Society.http://photonicssociety.org/award-winners/John%20Tyndall%20Award. Retrieved January 4, 2011 (2011-01-04).
[edit] External links
[edit] See also
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read our disclaimers for more information. | p*******5
发帖数: 6446 | 2 RIP.
Utah
laid
【在 S*********k 的大作中提到】
: From today's NY Times:
: Tingye Li （厉鼎毅）, Instrumental in the Laser’s Development, Dies at 81
: Tingye Li, an electrical engineer whose calculations in the early 1960s
: helped guide the development of the laser and propel the dizzying increase
: in the speed of fiber-optic communication, died on Dec. 27 in Snowbird, Utah
: . He was 81.
: Family photo
: Some of the work done by Dr. Tingye Li and his colleagues at Bell Labs laid
: the groundwork for today’s broadband.
: The cause was a heart attack while he was on a family ski trip, his family
| w********h
发帖数: 12367 | 3 刚才读世界日报上看到这个消息，然后就查了查这个人。
发现他岳父是吴国祯。。。。过去中国的名人都是一家人啊。。。。
两个女儿，都嫁给了白人，一个哥伦比亚医学院读了医，
一个普林的本科斯坦福的电子博士，在公司工作了很多年后到了大石头分校做什么
director。。。
Utah
laid
【在 S*********k 的大作中提到】
: From today's NY Times:
: Tingye Li （厉鼎毅）, Instrumental in the Laser’s Development, Dies at 81
: Tingye Li, an electrical engineer whose calculations in the early 1960s
: helped guide the development of the laser and propel the dizzying increase
: in the speed of fiber-optic communication, died on Dec. 27 in Snowbird, Utah
: . He was 81.
: Family photo
: Some of the work done by Dr. Tingye Li and his colleagues at Bell Labs laid
: the groundwork for today’s broadband.
: The cause was a heart attack while he was on a family ski trip, his family
|
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