Mitsubishi Electric Offers 10-Gbps EA Modulated DFB Laser Diode for DWDM Transmissions Up to 50 km.Business Editors/High-Tech Writers SUNNYVALE, Calif.--(BUSINESS WIRE)--March 12, 2002 Enables Use of Up to 46 Wavelengths in C Band The Electronic Device Group of Mitsubishi Electric & Electronics USA, Inc., introduced a new 10 gigabit-per-second (Gbps) electro-absorption (EA) modulated distributed feedback (DFB DFB acronym for dark, firm, dry meat. Called also dark cutting beef. ) laser diode capable of 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 (1) transmissions up to 50 km. The new ML9XX31 laser diode enables designers to use the maximum number of wavelengths available in the C Band, so that several devices can be multiplexed together to achieve data transmission rates potentially as high as 460 Gbps. As a result, the new device is an ideal light source for high-volume Internet and data communications in metropolitan area networks. Integrating the EA modulator Modulator Any device or circuit by means of which a desired signal is impressed upon a higher-frequency periodic wave known as a carrier. The process is called modulation. The modulator may vary the amplitude, frequency, or phase of the carrier. and laser diode on one chip not only saves module space, but it also enables the ML9XX31 to be manufactured in InGaAsP(2) semiconductor technology, benefiting from the economies of scale of large-scale production, unlike devices using lithium-niobate technology. The ML9XX31 laser diode also requires a lower applied voltage than lithium-niobate products, reducing power consumption and making the device easier to handle and operate. The ML9XX31 laser diode is much more flexible for optical network system design because it enables designers to use the maximum of 46 wavelengths available throughout the C Band (1530-1565 nm), as specified by the International Telecommunications Union See ITU. (body, standard) International Telecommunications Union - (ITU) ITU-T, the telecommunication standardisation sector of ITU, is responsible for making technical recommendations about telephone and data (including fax) communications systems for PTTs and suppliers. (a). This is possible because Mitsubishi Electric has optimized the parameters of the DFB laser diode and EA modulator portions of the ML9XX31 chip for each wavelength point. As a result, designers have the maximum number of wavelengths to choose from, if they should want to multiplex several ML9XX31 laser diodes together to obtain data transmission rates potentially as high as 460 Gbps. A key reason that the ML9XX31 is able to effectively transmit up to 50 km is because it features low chirp performance, enabling the device to deliver a power penalty of less than 2.0 decibels (dB). The device has a typical operating current of 60 milliamps at 5 milliwatts of output power, as well as a typical side mode suppression ratio of 40 dB. It also has typical rise and fall times of 30 picoseconds each, with an extinction ratio of 11 dB. "Metropolitan area network expansion drives the market right now," said Daniel Chen, assistant vice president of high-frequency products for Mitsubishi Electric & Electronics USA, Inc. "This new laser diode delivers the high performance levels demanded for intermediate-reach DWDM transmissions over these networks. While performance is always paramount, cost is also an issue. By integrating the EA modulator with the laser diode, we have produced a smaller, more power-efficient light source capable of up to 50 km transmissions at a lower cost than lithium-niobate alternatives." Packaging, Availability, and Pricing The ML9XX31 laser diode is available in a chip-on-carrier package. Samples are available now, with volume production scheduled for October 2002. Pricing is $1,000 each in sample quantities.
(a) NOTE: The International Telecommunications Union (ITU)
requires that DWDM uses 0.8-nm spacing with 100-GHz spacing.
Since 35 nm is the range for each wavelength in the ITU
specification, 46 wavelengths are the maximum number of
wavelengths available in the C Band (1530-1565 nm).
Definitions
(1) DWDM = Dense Wavelength Divisional Multiplexing
(2) InGaAsP = Indium Gallium Arsenide Phosphide
About Mitsubishi Electric & Electronics USA, Inc. Mitsubishi Electric Corporation offers a diverse range of optoelectronic products for SDH (Synchronous Digital Hierarchy) The European counterpart to SONET. See SONET. SDH - Synchronous Digital Hierarchy , SONET, CWDM (Course WDM) An optical transmission method that is used for shorter distances than dense WDM (DWDM). Also known as "wide WDM," CWDM transmits fewer channels and uses wider spacing between the channels for distances up to 60 km. Wider spacing up to 25 nm, compared to 1. , DWDM, data communication, and FITL FITL Fiber-In-The-Loop (telecommunications) FITL Flight Increment Training Load , as well as passive optical network systems, test and instrumentation applications, and CATV (Community Antenna TV) The original name for cable TV. It used a single antenna at the highest location in the community in order to deliver a quality signal to homes in areas with hilly terrain or other interference. distribution. The company markets its optoelectronic products in North America through the Electronic Device Group of Mitsubishi Electric & Electronics USA, Inc. Mitsubishi Electric Corporation and its North American affiliate, Mitsubishi Electric & Electronics USA, Inc., are world-class suppliers of semiconductors and electronic products for communications, industrial, Internet-enabled, automotive, and visual applications. Mitsubishi Electric combines its systems-level expertise and high-level silicon process technologies to provide chip, chipset, and system-on-chip solutions. The company is ranked among the top-tier worldwide semiconductor suppliers and offers an extensive range of semiconductor and computer system components for the North American marketplace, including DRAM, flash, SRAM See static RAM. SRAM - static random-access memory , ASIC (Application Specific Integrated Circuit) Pronounced "a-sick." A chip that is custom designed for a specific application rather than a general-purpose chip such as a microprocessor. , ASSP (Application Specific Standard Part) An ASIC chip that is designed as a generic device for a particular market. Whereas an ASIC is typically used only by its creator, ASSPs are used by many different companies in the design of their products. See ASIC. , MCU (1) (MicroController Unit) A computer on a single chip. See microcontroller. (2) (Multipoint Control Unit) A device that is used to moderate a videoconference of three or more end points (users at computers or groups of users , microwave/RF, and optoelectronic devices. Additional information on the Mitsubishi Electric Semiconductor Group is available at http://www.mitsubishichips.com/. Trademark Information Mitsubishi and the Mitsubishi logo are registered trademarks of Mitsubishi Electric Corporation in the U.S.A., Japan, and other countries. Keywords Mitsubishi, optoelectronic, laser, 10 Gbps, 10Gb/s, DFB, EAM (1) (Enterprise Asset Management) The management and control of the information technology assets within the enterprise. The asset management repository includes a description of the asset as well as contract information pertaining to its acquisition. , DWDM, MAN, network, intermediate reach. |
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