Read e-book online Planning Fiber Optics Networks   PDF

By Bob Chomycz

ISBN-10: 0071642692

ISBN-13: 9780071642699

Plan and enforce fiber optic networks

Effectively layout and set up bandwidth-rich networks for significant sorts of information site visitors. masking either short-reach and long-haul networks, Planning Fiber Optic Networks offers complete information on all significant fiber optic parameters and comprises applicable historical past thought and layout calculations. you will discover instructions for optimizing SONET/SDH and Ethernet networks, constructing community topologies, minimizing sign loss and impairments, and utilizing darkish fiber. Real-world examples are integrated all through this sensible guide.

  • Understand sign propagation in a single-mode fiber
  • Plan an optical loss budget
  • Maintain an appropriate optical signal-to-noise ratio (OSNR)
  • Learn concerning the results of chromatic dispersion (CD) and polarization mode dispersion (PMD)
  • Expand fiber skill utilizing wavelength department multiplexing (WDM)
  • Reduce fiber nonlinear impairments
  • Perform fiber characterization to make sure optimum caliber and performance
  • Test Ethernet and SONET/SDH networks
  • Plan point-to-point and ring fiber topologies
  • Lease or buy darkish fiber

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0 = 50 ps Gaussian pulses respect to normalized fiber distance (fiber distance divided by dispersion length LD). The dispersion length parameter is calculated to be 155 km. 652 fiber, which has positive chromatic dispersion of 17 ps/(nm ƃ km). 0. The pulse constantly expands in width as it propagates in the fiber. 4 and then expands more rapidly than the chirpless case. At a normalized distance of approximately 1, where the dispersion length equals the distance, the pulse width begins to exceed that of the chirpless case.

The former is caused by the pulse舗s rapid rise and fall times. The latter is caused by the difference in power levels between the optical 1 and zero states of the signal. Transient chirp is most detrimental in pulse propagation because it hastens pulse broadening and is the dominant term for directly modulated semiconductor lasers (DML). 8a is an example of an RZ modulation DML optical pulse and Fig. 8b represents the frequency chirp associated with the pulse. The leading edge of the pulse舗s carrier frequency is shifted to a higher frequency and the falling edge shifts to a lower frequency.

2, 1986. 1 Description Signal loss is the reduction of signal power along a transmission path. For fiber optic communications the transmission path is optical and consists of fibers, connectors, splices, and other optical components. The total link loss, which is the optical transmission path loss measured from the transceiver laser output to the receiver input, is the most important planning parameter to consider for all fiber systems. Optical loss is defined as a dimensionless ratio of optical output power to input power for a fiber or component at a specific wavelength, see Eq.

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Planning Fiber Optics Networks   by Bob Chomycz


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