- Bell Labs
Bell Laboratories (also known as Bell Labs and formerly known as AT&T Bell Laboratories and Bell Telephone Laboratories) is the
researchorganization of Alcatel-Lucentand previously the American Telephone & Telegraph Company(AT&T).
Bell Laboratories has had its headquarters at
Murray Hill, New Jersey, and it has research and development facilities throughout the world.
Origin and historical locations
In 1925 Western Electric Research Laboratories and part of the engineering department of the
American Telephone & Telegraphcompany (AT&T) were consolidated to form Bell Telephone Laboratories, Inc., as a separate entity. The first president of research was Frank B. Jewett, who stayed there until 1940. The ownership of Bell Laboratories was evenly split between AT&T and the Western Electric Company. Its principal work was to design and support the equipment that Western Electric built for Bell System operating companies, including telephone exchange switches. Support work for the phone companies included the writing and maintaining of the Bell System Practices (BSP), a comprehensive series of technical manuals. Bell Labsalso carried out consulting work for the Bell Telephone Companies, and U.S. government work, including Project Nikeand the Apollo program. A few workers were assigned to basic research, and this attracted much attention, especially since they produced several Nobel Prizewinners. Until the 1940s, the laboratory's principal locations were in and around the Bell Labs Building in New York City, but many of these were moved to the New York suburbs area of New Jersey.
Among the later Bell Laboratories locations in New Jersey were
Murray Hill, New Jersey, Holmdel, New Jersey, Crawford Hill, New Jersey, the Deal Test Site, Freehold, New Jersey, Lincroft, Long Branch, Middletown, Princeton, Piscataway, Red Bank, and Whippany, New Jersey. Of these, Crawford Hill, Murray Hill, and Whippany remain in existence. The largest grouping of people in the company was in Illinois, at Naperville-Lisle, in the Chicagoarea, which had the largest concentration of employees (about 11,000) prior to 2001. There also were groups of employees in Columbus, Ohio, Allentown, Pennsylvania, and Breinigsville, Pennsylvania, and Westminster, Colorado. Since 2001, many of the former locations have been scaled down, or shut down entirely.
Discoveries and Developments
At its peak, Bell Laboratories was the premier facility of its type, developing a wide range of revolutionary technologies, including
radio astronomy, the transistor, the laser, information theory, the UNIX operating system, and the C programming language. There have been six Nobel Prizes awarded for work completed at Bell Laboratories. [ [http://www.bell-labs.com/about/awards.html#nobel List of Awards] ]
*1937 Clinton J. Davisson shared the Nobel Prize in Physics for demonstrating the wave nature of matter.
John Bardeen, Walter H. Brattain, and William Shockleyreceived the Nobel Prize in Physics for inventing the first transistors.
Philip W. Andersonshared the Nobel Prize in Physics for developing an improved understanding of the electronic structure of glass and magnetic materials.
Arno A. Penziasand Robert W. Wilson shared the Nobel Prize in Physics. Penzias and Wilson were cited for their discovery of cosmic microwave background radiation, a nearly uniform glow that fills the Universein the microwave band of the radio spectrum.
Steven Chu, shared the Nobel Prize in Physics for developing methods to cool and trap atoms with laser light.
Horst Stormer, Robert Laughlin, and Daniel Tsui, were awarded the Nobel Prize in Physics for the discovery and explanation of the fractional quantum Hall effect.
During its first year of operation, facsimile (
fax) transmission, invented elsewhere, was first demonstrated publicly by the Bell Laboratories. In 1926, the laboratories invented the first synchronous-sound motion picture system, [ [http://www.britannica.com/eb/article-9015241 Encyclopædia Britannica Article] ] and continued to produce inventions throughout its lifetime.
In 1924, Bells Labs physicist Dr.
Walter A. Shewhartproposed the control chartas a method to determine when a process was in a state of statistical control. Shewart's methods were the basis for statistical process control(SPC) - the use of statistically-based tools and techniques for the management and improvement of processes. This was the origin of the modern quality movement, including the Six Sigmaone.
In 1927, a long-distance
televisiontransmission of images of the Secretary of Commerce Herbert Hooverfrom Washington to New York was successful, and in 1928 the thermal noisein a resistor was first measured by John B. Johnson, and Harry Nyquistprovided the theoretical analysis. (This is referred to as "Johnson noise".) During the 1920s, the one-time pad cipherwas invented by Gilbert Vernamand Joseph Mauborgneat the laboratories. Bell Labs' Claude Shannonlater proved that it is unbreakable.
In 1931, a foundation for
radio astronomywas laid by Karl Janskyduring his work investigating the origins of static on long-distance shortwave communications. He discovered that radiowaves were being emitted from the center of the galaxy. In 1933, stereo signals were transmitted live from Philadelphiato Washington, DC. In 1937, the vocoder, the first electronic speech synthesizerwas invented and demonstrated by Homer Dudley. Bell researcher Clinton Davissonshared the Nobel Prize in Physics with George Paget Thomsonfor the discovery of electron diffraction, which helped lay the foundation for solid-state electronics.
with his 1949 paper [http://www3.edgenet.net/dcowley/docs.html Communication Theory of Secrecy Systems] .
*Model I - A Complex Number Calculator, completed January 1940, for doing calculations of
complex numbers. See George Stibitz.
*Model II - Relay Calculator or Relay Interpolator, September 1943, for aiming anti-aircraft guns
*Model III - Ballistic Computer, June 1944, for calculations of ballistic trajectories
*Model IV - Bell Laboratories Relay Calculator, March 1945, a second Ballistic Computer
*Model V - Bell Laboratories General Purpose Relay Calculator, of which two were built, July 1946 and February 1947, which were general-purpose programmable computers using electromechanical relays
*Model VI - November 1950, an enhanced Model V
The 1950s saw fewer developments and less activity on the scientific side. Efforts concentrated more precisely on the Laboratories' prime mission of supporting the Bell System with engineering advances including N-carrier, TD
Microwave radio relay, Direct Distance Dialing, E- repeaters, Wire spring relays, and improved switching systems. Maurice Karnaugh, in 1953, developed the Karnaugh mapas a tool to facilitate management of Boolean algebraic expressions. In 1954, The first photo voltaic was examined at Bell Laboratories. As for the spectacular side of the business, in 1956 TAT-1, the first transatlantic telephone cablewas laid between Scotland and Newfoundland, in a joint effort by AT&T, Bell Laboratories, and British and Canadian telephone companies. A year later, in 1957, MUSIC, one of the first computer programs to play electronic music, was created by Max Mathews. New greedy algorithms developed by Robert C. Primand Joseph Kruskal, revolutionized computer networkdesign. In 1958, the laserwas first described, in a technical paper by Arthur Schawlowand Charles Hard Townes.
In 1960, Dawon Kahng and Martin Atalla invented the metal oxide semiconductor field-effect transistor (
MOSFET); the MOSFET has achieved electronic hegemony and sustains the large-scale integrated circuits (LSIs) underlying today's information society. In 1962, the electret microphonewas invented by Gerhard M. Sessler and James Edward Maceo West. In 1964, the Carbon dioxide laserwas invented by Kumar Patel. In 1965, Penzias and Wilson discovered the Cosmic Microwave Background, and won the Nobel Prize in 1978. In 1966, Orthogonal frequency-division multiplexing(OFDM), a key technology in wireless services, was developed and patented by R. W. Chang. In 1968, Molecular beam epitaxywas developed by J.R. Arthurand A.Y. Cho; molecular beam epitaxy allows semiconductor chips and laser matrices to be manufactured one atomic layer at a time. In 1969, the UNIXoperating system was created by Dennis Ritchieand Ken Thompson. The Charge-coupled device(CCD) was invented in 1969 by Willard Boyleand George E. Smith.
, the BELLMAC-32A was demonstrated. It went into production in 1982.
In 1980, the TDMA and
CDMAdigital cellular telephone technology was patented. In 1982, Fractional quantum Hall effectwas discovered by Horst Störmer and former Bell Laboratories researchers Robert B. Laughlinand Daniel C. Tsui; they consequently won a Nobel Prize in 1998 for the discovery. In 1983, the C++programming language was developed by Bjarne Stroustrupas an extension to the original C programming language also developed at Bell Laboratories.
In 1984, the first photoconductive antennas for picosecond electromagnetic radiation were demonstrated by Auston et al. This type of antenna now becomes an important component in
terahertz time-domain spectroscopy. In 1984, the Karmarkar Linear Programming Algorithm was developed by mathematician Narendra Karmarkar. Also in 1984, a divestiture agreement with the American Federal government forced the break-up of AT&T: Bellcore(now Telcordia Technologies) was split off from Bell Laboratories to provide the same R&D functions for the newly created local exchange carriers. AT&Talso was limited to using the Bell trademark only in association with Bell Laboratories. Bell Telephone Laboratories, Inc., was then renamed AT&T Bell Laboratories, Inc., and became a wholly owned company of the new AT&T Technologiesunit, the former Western Electric. The 5ESS Switchwas developed during this transition. In 1985, laser coolingwas used to slow and manipulate atoms by Steven Chuand team. Also in 1985, Bell Laboratories was awarded the National Medal of Technology"For contribution over decades to modern communication systems". During the 1980s, the Plan 9 operating system was developed as a replacement for Unixwhich was also developed at Bell Laboratories in 1969. Development of the Radiodrum, a three dimensional electronic instrument. In 1988, TAT-8became the first fiber optic transatlantic cable.
WaveLAN, the first wireless local area network(WLAN) was developed at Bell Laboratories. Wireless network technology would not become popular until the late 1990s and was first demonstrated in 1995. In 1991, the 56K modemtechnology was patented by Nuri Dağdeviren and his team. In 1994, the Quantum cascade laserwas invented by Federico Capasso, Alfred Cho, Jerome Faist and their collaborators and was later greatly improved by the innovations of Claire Gmachl. Also in 1994, Peter Shordevised his quantum factorization algorithm. In 1996, SCALPEL electron lithography, which prints features atoms wide on microchips, was invented by Lloyd Harriott and his team. The Inferno operating system, an update of Plan 9, was created by Dennis Ritchie with others, using the new concurrent Limbo programming language. A high performance database engine (Dali) was developed which became DataBlitz in its product form.
AT&T spun off Bell Laboratories, along with most of its equipment-manufacturing business, into a new company named Lucent Technologies. AT&T retained a smaller number of researchers, who made up the staff of the newly-created
AT&T Laboratories. In 1997, the smallest practical transistor (60 nanometers, 182 atoms wide) was built. In 1998, the first optical router was invented and the first combination of voice and data traffic on an Internet Protocol(IP) network was developed at the Laboratories.
2000 was an active year for the Laboratories, in which
DNA machineprototypes were developed; progressive geometry compression algorithm made widespread 3-D communication practical; the first electrically powered organic laser invented; a large-scale map of cosmic dark matterwas compiled, and the F-15 (material), an organic material that makes plastic transistors possible, was invented.
Jan Hendrik Schön, a German physicist, was fired after his work was found to contain fraudulent data. It was the first known case of fraud at Bell Labs.
In 2003, the New Jersey Nanotechnology Laboratory was created at
Murray Hill, New Jersey. [ [http://www.njnano.org/resources/index.shtml New Jersey Nanotechnology Consortium. Profile] ]
In 2005, Dr. Jeong Kim, former President of Lucent's Optical Network Group, returned from academia to become the President of Bell Laboratories.
In April 2006, Bell Laboratories's parent company, Lucent Technologies, signed a merger agreement with
Alcatel. On December 1, 2006, the merged company, Alcatel-Lucent, began operations. This deal raised concerns in the United States, where Bell Laboratories works on defense contracts. A separate company, [http://www.lgsinnovations.com LGS] , with an American board was set up to manage Bell Laboratories' and Lucent's sensitive U.S. Governmentcontracts.
In December 2007, it was announced that the former Lucent Bell Laboratories and the former Alcatel Research and Innovation would be merged into one organization under the name of Bell Laboratories, continuing the commitment to research at Alcatel-Lucent. This is the first period of growth following many years during which Bell Laboratories progressively lost manpower due to layoffs and spin-offs.
As of July 2008, however, only four scientists remained in physics basic research according to a report by the scientific journal "Nature". [cite web|url=http://www.nature.com/news/2008/080820/full/454927a.html |title=Access : Bell Labs bottoms out : Nature News |publisher=Nature.com |author=Geoff Brumfiel |date= |accessdate=2008-09-14]
On August 28, 2008, Alcatel-Lucent announced it was pulling out of basic science, material physics, and semiconductor research, and it will instead focus on more immediately marketable areas including networking, high-speed electronics, wireless networks, nanotechnology and software. [cite web |url=http://blog.wired.com/gadgets/2008/08/bell-labs-kills.html |first=Priya |last=Ganapati |title=Bell Labs Kills Fundamental Physics Research |date=2008-08-27 |accessdate=2008-08-28 |work=Wired ]
Alcatel-Lucent- Parent company of Bell Laboratories
Arun Netravali- Bell Laboratories engineer - former president of Bell Laboratories
Bell Labs Holmdel Complex
Walter A. Shewhart- Bell Laboratories engineer - "father of statistical quality control"
George Stibitz- Bell Laboratories engineer - "father of the modern digital computer"
Worse is Better" - A Software design philosophy also called "The New Jersey Style" under which UNIX and C are supposedly developed
History of mobile phones- Bell Laboratories conception and development of cellular phones
High speed photography& Wollensak- "Fastax" high speed (rotating prism) cameras developed by Bell Labs
Sound film- "Westrex" sound system for cinema films developed by Bell Labs
* [http://www.bell-labs.com/ Bell Labs]
* [http://www.bell-labs.com/about/history/timeline.html Timeline of discoveries as of 2006]
* [http://www.bell-labs.com/org/1133/Research/Acoustics/AnechoicChamber.html Bell Labs' Murray Hill anechoic chamber]
* [http://www.porticus.org/bell/bell.htm Bell System Memorial]
* [http://maps.google.com/maps?ll=40.683404,-74.400744&spn=0.004066,0.006605&t=k&hl=en Google maps satellite view of the Murray Hill Facility]
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