The research and development arm of the AT&T Bell System.As a result of the Modified Final Judgement (MFJ) that broke up the Bell System in 1984, Bell Labs and AT&T Technologies merged to form Lucent Technologies, which was acquired in 2006 by Alcatel, a French company to form Alcatel-Lucent. Undoubtedly, Bell Labs was once one of the greatest scientific laboratories the world has ever known. Bell Labs innovations include the transistor (1947), cellular telephone (1947), solar cells (1954), the laser (1958), digital transmission (1962), communications satellites (1962), the Unix operating system (1969), and the digital signal processor (DSP) (1979).
The research and development center of Alcatel-Lucent, formerly Lucent Technologies and AT&T. One of the most renowned scientific laboratories in the world, many of the major electronic inventions of the modern age were developed at Bell Labs, including the transistor, the laser, solar cell, wavelength optical multiplexing (see DWDM), the Unix operating system and the C programming language. In 2015, Nokia acquired Alcatel-Lucent and Bell Labs officially became Nokia Bell Labs. See transistor and laser.