Sabeus Releases QuietLight(TM) Laser; Low Phase Noise, Non-Microphonic DFB Laser for Sensing, Metrology and Telecommunications Applications.CALABASAS, Calif. -- Sabeus, Inc., a leading manufacturer of fiber optic components and telecommunications sub-systems, today announced the release of the QuietLight Low phase noise DFB DFB acronym for dark, firm, dry meat. Called also dark cutting beef. laser. The narrow line width, low phase noise laser is immune to the frequency output instability inherent to all lasers operating in harsh environments. The QuietLight Laser is a fully integrated laser source that includes Sabeus' patent pending Multi-Variable Control System (MVCS MVCS Multi Vehicle Control System MVCS Marine Vapor Control System MVCS Multi Vendor Contribution System (market data software) (TM)), laser driver, power regulator, optical frequency reference, frequency stabilization circuit, and TEC control. "With our QuietLight laser capability, we are targeting a broad set of applications, including interferometry, test & measurement, fiber gyros This article is about the food dish. For other uses, see Gyro. Gyros or gyro (Greek: γύρος, "turning") (IPA: [ˈjɪːɹəʊ] , and our sister organizations' acoustic interrogators for commercial and military sensor systems," said Mark Demos, General Manager of Sabeus Photonics. QuietLight Enables New Fiber Sensing Capabilities QuietLight enables the deployment of critical all-fiber sensor systems in harsh environments where microphonic noise and vibration are problematic for legacy laser systems. This reduces system cost and complexity for integrators and equipment designers. Through software the QuietLight's performance can be optimized for different criteria such as low frequency jitter A flicker or fluctuation in a transmission signal or display image. The term is used in several ways, but it always refers to some offset of time and space from the norm. For example, in a network transmission, jitter would be a bit arriving either ahead or behind a standard clock cycle , low phase noise, and narrow bandwidth. The settings can be retained in non-volatile memory or changed during the operation of the laser. This allows economy of scale in manufacturing and customization of the QuietLight Laser for specific applications such as seismic sensing, structural monitoring, interferometry, fiber optic gyros, and frequency references for satellite and terrestrial microwave communication. Fiber optic seismic sensing systems need low phase noise and immunity to microphonic interference (noise) to obtain the very large signal to noise ratios that enable them to be the most sensitive systems available. The QuietLight's low phase noise is also critical in phase measuring applications such as fiber optic gyros and Ku band satellite communications. The QuietLight's narrow line width improves the performance and channel count capability of fiber optic communication systems while holding down system costs. Structural monitoring of various surfaces, including airframes, dams, levees, buildings, bridges and roadways is improved by the QuietLight's frequency stability and narrow line width. The frequency accuracy over a 20-year span is within 250 MHz (MegaHertZ) One million cycles per second. It is used to measure the transmission speed of electronic devices, including channels, buses and the computer's internal clock. A one-megahertz clock (1 MHz) means some number of bits (16, 32, 64, etc. of the wavelengths calibrated cal·i·brate tr.v. cal·i·brat·ed, cal·i·brat·ing, cal·i·brates 1. To check, adjust, or determine by comparison with a standard (the graduations of a quantitative measuring instrument): during manufacturing. MVCS Technology The QuietLight's frequency stability is accomplished via Sabeus' patent-pending Multi-Variable Control System (MVCS). This advanced system provides real-time control over a standard Distributed Feedback (DFB) semiconductor laser and dramatically improves laser performance in almost every dimension. This is accomplished through precise monitoring of the laser, adaptive algorithms, and active control of both temperature and current. Within 20 seconds the laser can jump to another frequency and be locked on the new frequency with unprecedented stability. The MVCS virtually eliminates microphonic disturbances to the laser's output and vastly improves the wavelength stability from gigahertz wavelength jitter to megahertz One million cycles per second. See MHz. MegaHertz - (MHz) Millions of cycles per second. The unit of frequency used to measure the clock rate of modern digital logic, including microprocessors. wavelength jitter. The adaptive MVCS control system also improves the DFB laser's line width by a factor of 1000 from megahertz to kilohertz One thousand cycles per second. See Hertz. and reduces the low frequency noise (dbRe Hz/sqrt(Hz) at 250 Hz) by a factor of 10,000 while maintaining full tunability over the L and C bands. QuietLight evaluation systems are available and include two lasers, a power supply, and the computer interface for active control of the lasers. Production QuietLight lasers are available with SMF-28 or PM fiber. Options include ITU (International Telecommunication Union, Geneva, Switzerland, www.itu.ch) A telecommunications standards body that is under the auspices of the United Nations. Comprising more than 185 member countries, the ITU sets standards for global telecom networks. channel spacing at 3.125 GHz, 6.250 GHz, 12.5 GHz, 25 GHz, 50 GHz, and 100 GHz for deployment in hyper-fine and standard DWDM (Dense WDM) The term given to wavelength division multiplexing (WDM) when significantly more channels were being added. Since WDM is increasingly more "dense" all the time, both terms are used synonymously. See WDM. DWDM - wavelength division multiplexing systems. The lasers can be produced with center wavelengths from 1310 nm to 1360 nm and 1500 nm to 1565 nm with tunability over 3 nm ranges with single DFB lasers and over 40 nm ranges with arrays. For fiber sensing applications, power levels to 80 mW are available with optimization of the laser performance for specific applications. The QuietLight Laser will be introduced at the ECOC ECOC European Conference on Optical Communications ECOC Error Correcting Output Codes ECOC Experimental Combat Operations Center ECOC Enhanced Combat Operation Center ECOC Emotional Cycle of Change 2005 show in Glasgow, Scotland, September 26-28, Booth #383 and will be available with a delivery time of 10 weeks. Contact info@sabeus.com for more information. About Sabeus Photonics Sabeus Photonics provides lasers, Gain Flattening Filters (GFF GFF Gain Flattening Filter (used in Erbium Doped Fiber Amplifier) GFF Glass Fiber Filter GFF Grain Foods Foundation GFF Generic File Format (application data) GFF Government Furnished Facility ), custom fiber arrays, fiber Bragg gratings, and high performance fiber optic components for telecommunications, military, test and measurement, and industrial applications. The company was founded in 1998 and maintains operations in Calabasas, California and Freeport, Pennsylvania. Sabeus is ISO (1) See ISO speed. (2) (International Organization for Standardization, Geneva, Switzerland, www.iso.ch) An organization that sets international standards, founded in 1946. The U.S. member body is ANSI. and Telcordia certified and is privately funded. www.sabeusphotonics.com |
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