WDM Last modified: Tuesday, September 18, 2001
(1) Short for wavelength division multiplexing, a type of multiplexing developed for use on optical fiber. WDM modulates each of several data streams onto a different part of the light spectrum. WDM is the optical equivalent of FDM. See DWDM (2) Short for Windows Driver Model, a driver technology developed by Microsoft to create drivers that are source-code compatible for Windows 98, 2000, Me and XP. WDM works by channeling some of the work of the device driver into portions of the code that are integrated into the operating system. These portions of code handle all of the low-level buffer management, including DMA and Plug and Play device enumeration. The WDM device driver becomes more streamlined with less code and works at greater efficiency. All versions of Microsoft Windows after Windows 95 have implemented WDM. Kernel-mode drivers that follow WDM rules are called WDM drivers.
•E-mail this definition to a colleague• Sponsored listings GlobalSpec.com: Fiber Optics - Database of suppliers for fiber optic cable, as well as attenuators, circulators, couplers, and modulators. Browse catalogs. For internet.com pages about WDM . Also check out the following links! WDM and high-bandwidth applications Home page for The National Transparent Optical Network Consortium (NTONC). Contains information on wave division mulitplexing (WDM) and high-bandwidth applications (telemedicine, supercomputer-to-supercomputer, digital library, etc.)	Fiber Optics Multiplexing Operating Systems ADM demultiplex device device driver DMA driver EDFA FDM fiber optics GBIC Microsoft Windows multiplex OFDM optoelectronics TDM Give Us Your Feedback Shopping WDM Products Compare Products,Prices and Stores Shop by Category: Security Systems and Surveillance 13 Store Offers Transceivers 10 Model Matches Tools and Accessories 16 Store Offers Jewelry 45 Store Offers Health Aids 8 Store Offers