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  2. Windows legacy audio components - Wikipedia

    en.wikipedia.org/wiki/Windows_legacy_audio...

    The MME API or the Windows Multimedia API (also known as WinMM) was the first universal and standardized Windows audio API. Wave sound events played in Windows (up to Windows XP) and MIDI I/O use MME. The devices listed in the Multimedia/Sounds and Audio control panel applet represent the MME API of the sound card driver.

  3. Wavelength-division multiplexing - Wikipedia

    en.wikipedia.org/wiki/Wavelength-division...

    OH-free silica fibers are recommended if the wavelengths between the second and third transmission windows are to be used [citation needed]. Avoiding this region, the channels 47, 49, 51, 53, 55, 57, 59, 61 remain and these are the most commonly used. With OS2 fibers the water peak problem is overcome, and all possible 18 channels can be used.

  4. Multi-mode optical fiber - Wikipedia

    en.wikipedia.org/wiki/Multi-mode_optical_fiber

    Some 200 and 400 Gigabit Ethernet speeds (e.g. 400GBASE-SR4.2) use wavelength-division multiplexing (WDM) even for multi-mode fiber [10] which is outside the specification for OM4 and lower. In 2017, OM5 has been standardized by TIA and ISO for WDM MMF, specifying not only a minimum modal bandwidth for 850 nm but a curve spanning from 850 to ...

  5. Arrayed waveguide grating - Wikipedia

    en.wikipedia.org/wiki/Arrayed_waveguide_grating

    The AWGs consist of a number of input (1) and output (5) couplers, a free space propagation region (2) and (4) and the grating waveguides (3). The grating waveguides consists of many waveguides, each having a constant length increment (ΔL). Light is coupled into the device via an optical fiber (1) connected to the input port.

  6. Spatial multiplexing - Wikipedia

    en.wikipedia.org/wiki/Spatial_multiplexing

    An often encountered problem in open loop spatial multiplexing is to guard against instance of high channel correlation and strong power imbalances between the multiple streams. One such extension which is being considered for DVB-NGH systems is the so-called enhanced Spatial Multiplexing (eSM) scheme.

  7. WDM - Wikipedia

    en.wikipedia.org/wiki/WDM

    Warm dense matter, a state of matter between solid and plasma; Wavelength-division multiplexing, a signal transmission method; wdm, the WINGs Display Manager on Unix; Windows Driver Model, a framework for device drivers in Windows; Wide Diesel Mixed, a series of Indian locomotives

  8. Optical add-drop multiplexer - Wikipedia

    en.wikipedia.org/wiki/Optical_add-drop_multiplexer

    An optical add-drop multiplexer (OADM) is a device used in wavelength-division multiplexing (WDM) systems for multiplexing and routing different channels of light into or out of a single-mode fiber (SMF). This is a type of optical node, which is generally used for the formation and the construction of optical telecommunications networks. "Add ...

  9. Windows Driver Model - Wikipedia

    en.wikipedia.org/wiki/Windows_Driver_Model

    In computing, the Windows Driver Model (WDM) – also known at one point as the Win32 Driver Model – is a framework for device drivers that was introduced with Windows 98 and Windows 2000 to replace VxD, which was used on older versions of Windows such as Windows 95 and Windows 3.1, as well as the Windows NT Driver Model.