DARK FIBER (FIBER OPTICS) Research Paper Example | Topics and Well Written Essays - 750 words

DARK FIBER (FIBER OPTICS) - Research Paper Example They also withstand ambient temperatures. Dark fiber, just as it sounds refers to unlit fiber as no light runs through it. According to Lovink (p. 226), it is an optical fiber infrastructure that has been installed but remains unused. This could be privately operated and run directly by an operator who leases it to another supplier who would rather not purchase leased line or bandwidth capacity. Hence, fiber could still be considered as dark if lit by the lessee and not the owner. This fiber is not connected or controlled by a phone company but rather an individual or company provides the required components for it to function. Dark fiber provides telecommunication operators with the ability to choose the technology that would be appropriate to them, whether SDH, fiber channel Ethernet or ATM without the need to construct an entire network infrastructure or even having to rent a managed service from an operator who other that being expensive could also be a competitor. Dark fiber has also been used in networks for dense wavelength division multiplexing (DWDM) as pointed by Rodriquez. The reason that dark fiber would exist in sufficiently planned networks would be because of the initial cost involved in installing cables, particularly civil engineering. The accompanying activities encompass planning, obtaining permission, routing, creating channels and ducts for the cables, installation and connection. Wagter claims that this would constitute over 60% of development cost pointing out at Amsterdam where this was at 80% with only 10% going to fiber. Therefore, it becomes more economical to plan and install mo re fiber than the current demand so as to give allowance for future expansion and security in case any cable fails (Lovink, 230). In the US, local exchange carriers avoided selling dark fiber to the end users fearing that it would eat into their other lucrative services. It was a requirement that they sell this

Oedipus Rex Essay Example | Topics and Well Written Essays - 1000 words

Oedipus Rex - Essay Example But as it is revealed in the concluding part of the play some duties are fundamental, and even the interest of the state and its laws are subservient to it. The duty to bury the dead concerns humanity and it has nothing to do with the existing law or ruling by any authority. It is the moral duty that derives authority from the unrecorded law. The Parameters of Free Will is another theme that is part of the play. Tiresias predicts the arrest of one who is both father and brother to his own children. Oedipus reveals to Jocasta of a prophecy he came to know as a youth, that he would kill his father and sleep with his mother, and Jocasta tells Oedipus of an identical prophecy given to Laius, that her son would grow up to kill his father. Oedipus and Jocasta enter into discussion about the extent to which prophecies should be relied upon at all, and when all of the prophecies come true, it appears that one of Sophocles’ aims is to defend the powers of the gods and prophets. In the play Oedipus has no other option but to fulfill the prophecy. Fate continuously overpowers him. Oedipus’s Swollen Foot is an example of symbolism in the play. Oedipus was left in the mountains with his ankles trapped together and Laius had abandoned him in that state on a desolate mountain shortly after he was born. Oedipus bears with this injury for the rest of his life and the scar is the indicator for the plight undergone by him. His injury symbolised the manner in which fate dealt with him and his movements were restricted since birth. That was Apollo’s prophecy to Laius. The Junction of Three-Roads: Jocasta mentions about the place where Laius is assassinated, where three roads intersect. This crossroad is mentioned often during the course of the play and it symbolises crucial moments of the play. Symbolically, a crossroad is the place where a decision has to be made about the path to