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Nortel Networks agreed in March 2000 to acquire CoreTek, a Massachusetts maker of MEMS-based tunable lasers and detectors, for up to $1.43 billion in Nortel common shares. The technology was intended to help Nortel build higher-capacity optical networks; CoreTek’s laser operations were later closed, and Nortel’s optical-components business was sold to Bookham in 2002.
Which tunable-laser company did Nortel buy?
Nortel announced its agreement to acquire CoreTek on March 22–23, 2000. CoreTek was based in Wilmington, Massachusetts, and made microelectromechanical systems (MEMS)-based tunable lasers, detectors and related optical components for fiber-optic transmission.
The announced consideration was up to $1.43 billion in Nortel common shares, not a stated cash purchase price. The amount was reported in contemporary coverage by Photonics Spectra and the Los Angeles Times.
Why did Nortel want tunable lasers?
Tunable lasers can be set to operate at different wavelengths. In fiber-optic networks, wavelength flexibility can support the transmission of more information over optical infrastructure. Nortel positioned CoreTek’s components as part of its plan to increase network capacity and move toward an all-optical Internet.
#1 Best Overall
- Operating voltage: 5V
- Source wavelength: 650 nm
- Apply to: for Arduino AVR
- Model: 1*Laser Receiver Sensor Module+ 1* KY-008 Laser Transmitter Module
- Laser Receiver Sensor Module uses the non modulated laser receiver, please use in the room where without the light, the sunlight or other lamps and lanterns will interfere, suggested in the dark environment use.
Nortel said the technology was designed for 10-Gbit/s systems, with a path toward 40- and 80-Gbit/s systems. Clarence Chandran, then president of Nortel’s Service Provider and Carrier Group, described CoreTek’s role this way: “CoreTek’s capabilities are an important building block in our vision to transform today’s Internet into the all-optical Internet of tomorrow.”
Nortel also presented CoreTek as complementary to its Qtera acquisition and proposed acquisition of Xros, combining optical-networking capabilities with components intended for faster transmission.
Rank #2
- 【Laser Sensor Module】Size: 1.52CM * 2.22CM; Power supply voltage: 5V;Output:When the laser output it's High level; when no laser light output it's low level;
- 【Laser Sensor Module】This sensor uses a non-modulated laser receiver, please use on the room which is dark.the sun or other lighting will interfere the using of the product.suggest use in a dark environment.
- 【Laser Head】Operating voltage: 5V; Power: 5MW; wavelength: 650 nm; OD: 6mm
- 【Laser Head】This 5V laser head is very easy to use, you can use for Arduino control, controllable laser pointer, theft detection, etc. interesting application devices.
What product work followed the acquisition?
Nortel’s 2001 report described development of a tunable-laser Laser Locker Card. It used an optical feedback loop to lock the laser to a wavelength. Nortel projected a revenue contribution by the fourth quarter of 2002; that projection does not establish that the product reached commercial sales.
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1Repair Windows errors before they cause bigger problems2Scan for outdated or missing drivers - takes under a minute3Clear out junk files and repair common Windows errorsWhat happened to CoreTek after Nortel acquired it?
A Nortel technology-history report from the University of Ottawa says Nortel had closed the CoreTek laser operations by September 2002. In November 2002, Bookham acquired Nortel’s optical-components business. Bookham’s SEC-filed report later recorded total consideration of $119.0 million for that transaction. That amount applies to the optical-components business sale, not to Nortel’s original CoreTek purchase.
Quick Recap
Best Value
- Output power: 5mW
- Wavelength: 650nm
- Working Voltage: 5V
Rank #4
- 【Laser Module】4W (4000mW) optical laser power output. Line width is narrower and suitable for ordinary plywood; Adjustable laser head(Adjustable focus: 20mm - 50mm), easy to adjust, ensures engraving with good quality and high efficiency. 4000 mW optical laser module can cut through 1-2mm Plywood in one pass. Class level: Class 1
- 【Original Diode with FAC】The Blue Laser module with original diode, high stability, high efficiency, and high quality. Bright blue-violet light, easy to locate when engraving. Adjustable focus laser head suitable for DIY engraving machine, three-axis engraving machine, upgrade or replacement, easy to install.
- 【Eay to Assemble】This diode laser module is small, compact, convenient, and easy to install. Size: 35*35*99.6mm. Wavelength: 450nm; Input: DC 12V 1.6A(1.4-1.8A); Power adjustable: Support 5V PWM modulation; Input port: XH2.54-3P socket; control line installation method: pluggable. Package include: 1*laser module, 1* 3pin cable
- 【Widely Use Materials】The laser engraving module can be used to engrave MDF, wood, paper, leather, bamboo, plastic, rubber, alumina, stainless steel, etc. (🔺Unable to engrave with blue/purple/white/transparent material, aluminum without oxide layer) Note🔺: Please wear appropriate safety glasses when using the laser module to prevent laser light, even any reflections from entering the eye
- 【Comprehensive & Trustworthy After-Sales Service】Our modules are suitable for PWM signal controlled laser engraver laser cutter machines, cnc machines and 3D printers and so on. But due to the many brands and models of machines, not all of them can be plug and play. If you need a pre-sale consultation of the laser module or encounter any problems, please feel free to contact us directly. We will troubleshoot and solve the problem for you!
Rank #3
- Output Power: 5mw
- Wavelength: 650nm
- Working Voltage: 3~5V
- Laser Shape: Point/Cross/Line
- Application: laser test tools, concentric locating, medical equipment locating, signal equipment making or DIY Project etc.
Key dates
| Date | Event |
|---|---|
| March 22–23, 2000 | Nortel announced/agreed to acquire CoreTek for up to $1.43 billion in Nortel common shares. |
| 2001 | Nortel reported Laser Locker Card development and projected revenue contribution by Q4 2002. |
| By September 2002 | Nortel’s CoreTek laser operations were reported closed. |
| November 2002 | Bookham acquired Nortel’s optical-components business; its later SEC filing reported $119.0 million in total consideration. |
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