Top Manual Guide » Computer Network

Scalable Network Programming

Wawan — Thu, 19 Jan 2012 04:53:23 +0000

The fork-and-do-something latency on my notebook on Linux 2.6 is 200 microseconds. That means my notebook can create 5.000 processes per second. Thus my notebook can handle about 13 billion forks per month. My Athlon XP 2000+ desktop can do 10.000 processes per second, or 26 billion per month. Heise Online, the biggest German site, [...]

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Scalable Network Programming

Network Programming with TCPIP UNIX

Wawan — Thu, 29 Dec 2011 16:54:29 +0000

Sockets developed for Berkeley UNIX : recall early Berkeley TCP/IP implementation, first delivered with BSD 2.1 central features: central abstraction – the socket – an end-point like an electrical connector, not TCP/IP specific (e.g. UNIX named pipes), uses normal read/write system calls, sockets associated with UNIX file descriptors but some not for normal I/O, some [...]

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Network Programming with TCPIP UNIX

Fiber Optic Cables Assemblies Product Training

Wawan — Thu, 22 Dec 2011 04:53:04 +0000

Fiber Optic Cable Assembly Capabilities Harsh environment multi-channel lanyard connector shell with metal M29504/4 (pins) Custom ceramic ferrule single channel connectors. Typical loss < 0.5dB. Termini and connectors are Cooper products Custom connector backshell with two D38999 Series IV connectors Ceramic ferrule M29504/4 (pin) and /5 (sockets) termini Typical optical loss < 0.4dB. Termini, connector [...]

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Fiber Optic Cables Assemblies Product Training

Fiber-Optic Technology

Wawan — Wed, 21 Dec 2011 16:53:29 +0000

The Design of Fiber Core and Cladding An optical fiber consists of two different types of highly pure, solid glass, composed to form the core and cladding. A protective acrylate coating (see Figure 1) then surrounds the cladding. In most cases, the protective coating is a dual layer composition. A protective coating is applied to [...]

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Fiber-Optic Technology

The Basics of Fiber Optic Cable

Wawan — Wed, 21 Dec 2011 04:53:01 +0000

Single Mode cable is a single stand of glass fiber with a diameter of 8.3 to 10 microns that has one mode of transmission. Single Mode Fiber with a relatively narrow diameter, through which only one mode will propagate typically 1310 or 1550nm. Carries higher bandwidth than multimode fiber, but requires a light source with [...]

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The Basics of Fiber Optic Cable

Shedding Light on Hybrid Optics – A Tutorial in Coupling

Wawan — Tue, 20 Dec 2011 16:54:03 +0000

In most fiber optic systems, optical fiber and waveguides are coupled to and from bulk optical devices, creating hybrid optical devices. In this tutorial article, the authors explain in detail how to successfully collimate, focus, and align hybrid optics, including polarizing and polarization maintaining optics. Glossary Mode field diameter (MFD): A measure of the intensity [...]

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Shedding Light on Hybrid Optics – A Tutorial in Coupling