news digest ♦ Lasers million shares of common stock outstanding.
TriQuint Semiconductor is authorising the repurchase of up to $50 million of the Company’s common stock through May 2nd, 2013.
The timing of open market and privately negotiated purchases will be dependent on market conditions and other corporate considerations, including price, corporate and regulatory requirements and alternative investment opportunities.
The program is expected to be funded from existing cash balances and cash generated from operations. The Company is not obligated to repurchase any particular amount of common stock during any period and may choose to suspend or discontinue the repurchase program at any time.
Shares of common stock repurchased by the Company through the repurchase program will become authorised but unissued shares. As of May 3rd, 2012, the Company has approximately 168.2 million shares of common stock outstanding.
Lasers A new transceiver for
10GBASE-SR XENPAK applications
The transmitter section incorporates a 1550nm FP laser diode and the receiver section uses an integrated indium gallium arsenide detector preamplifier
GAO Comm has released a 10GBASE-SR XENPAK transceiver which can be used in switches and modules that support XENPAK transceivers.
10GBASE-SR XENPAK fibre optic transceiver
This company says its high performance 10GBASE- SR XENPAK transceiver, model C018XX01, is a fully integrated 10.3Gbit/s optical transceiver module that consists of an 850 nm wavelength optical transmitter and receiver, XAUI interface, Mux and Demux with clock and data recovery (CDR).
It is hot Z-pluggable and features up to 10.3 GBd bi-directional data links and RoHS compliance.
This transceiver uses an 850 nm VCSEL laser diode to achieve a transmission distance of up to 300 m over 50/125 multi-mode fibre. It also allows for MDIO and DOM and has SC connectors.
This 10GBASE-SR XENPAK transceiver belongs to GAO’s family of Extreme compatible transceivers. This line includes a wide variety of Extreme compatible transceivers such as Extreme Compatible 10GBASE-ER XENPAK Transceivers.
The latest addition to the family uses a cooled 1550 nm EML laser diode to achieve a transmission distance of up to 40 km over standard single mode fibre, and an Extreme Compatible 1000Base-LX GBIC Transceiver. This consists of a transmitter section incorporating an advanced FP laser diode and a receiver section which has an integrated InGaAs detector preamplifier (IDP) mounted in an optical header and a limiting post-amplifier IC.
Using a single nanomaterial to create a multi-colour laser
The lasers are nanometre-sized semiconductor particles called colloidal quantum dots (CQDs) with an inner core of cadmium and selenium alloy and a coating of zinc, cadmium, and sulphur alloy. Adjusting the size of the pyramid-shaped QDs changes the laser light colour
Engineers at Brown University and QD Vision have created nanoscale single crystals that can produce red, green, or blue laser light needed in digital displays.
The size determines colour, but all the pyramid- shaped quantum dots are made the same way of the same elements. In experiments, light
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www.compoundsemiconductor.net June 2012
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