Fiber optic communication
Introduction: from the very beginning of world civilization, this world has experienced three revolutionary changes. The first revolutionary change came through the advent of agricultural system. The second came with the inversion of steam engine industrial revolution. The third one is the information revolution that conquered and linked all the corners of the world. Today, the world has become very small and integrated by the virtue of advanced communication systems and channels.
Origin of the fiber optic communication system: using light as a form of communication is by no means a recent development. One of the first forms of optical communication was using the fire and smoke signals. Technically speaking, a simple gesture such as waving your and comes under the preview of communication since it requires the presence of light performing the some gesture in a darkroom will not evoke response from the other party.
What is optical fiber: the optical fiber is a way for transporting light in fiber is essentially trapped within it because the core of the fiber has a higher reflective index then the cladding. As the optical signal traverses the fiber, it diminishes in power because of loos in the fiber.
The concept is starting forward and elegant, however, its implementation is by no means trivial but rather completed.
Spread of fiber optic communication: the fiber optic communication system is encircling the world very first. The demand for optical fiber today is almost unimaginable. Fiber is being deployed worldwide at a rate of about 500 km per hour. The giant fiber manufactures such as corning and lucent technologies are sold out of their fiber for next 11 to 12 months. Data and voice traffic are increasing at a rate of about 80 percent and 10 percent per year respectively.
Advantages of fiber communication: firstly, optical fibers are compact, lightweight and have the ability to transfer large amounts of information, second, optical fiber, be they silica based glass or plastic, are insulators and therefore, have no currents flowing in them. As a result fibers are immune to electromagnetic interference. Thirdly, fiber system cannot be trapped into without being detected. His degree of security is essential for systems transferring sensitive information such as national security and military issue. Fourth, another advantage of optical fiber is that they do not corrode.
Optical fiber communication and Bangladesh:like developed countries, there have been great strides in progress of fiber optic technology in Bangladesh. The focus of research and development has evolved from reducing the losses in a fiber to trying to perform all optical networking, the holy grail of fiber optic communication. Fiber optics has found applications in telephone trunks, subscriber service, broadest and cable TV, data communication and sensors.
Conclusion: above discussion shows that any country that lagged behind fiber optic communication means it’s lagging behind modern science and technology. As Bangladesh has missed to manipulate the opportunities of submarine cables, the people of the country must pay for this. Thus, our government should take quick decision on the issue of submarine cable; any delay to take decision may have to pay more.
The word 'secular' is used with reference to the Church. In the Middle Ages religion was the most dominant force and the State was more or less ecclesiastical (guided by the Church or the religious head). So secular means free from religious consideration. In India, it broadly means a non-communal approach. In 1947 the country was partitioned (divided) on communal lines. Pakistan and later on Bangladesh opted for remaining Islamic or religion based states. But free India has made her appearance in the Comity of Nations as a secular democratic State. Our Constitution says that the State is not identified with any particular religion. This means that India has no officially recognized state religion. Every citizen of India has the full freedom to profess his or her own faith, interfered by the Govt. The Hindus are in large majority in India. Yet Sri Nehru, our First Prime Minister, took the bold step of ridding (freeing) the society of the communal bias. The administration of India is ideally free from all communal considerations. Here in India man of any religion or faith can occupy the highest position in the state. There are equal opportunities given to all citizens to compete and come on top. Men like Dr. Rajendra Prasad, Dr. Radhakrishnan, Dr. Zakir Hussain, Fakuruthlin, All Ahammed, Zail Singh, Sri K. R. Narayan—i.e. Hindus, Muslim, Sikhs and Harizans have held the posts of the highest honor—that of the President and Vice-President. Similarily, our Union State ministers, our Governors and Ambassadors, our administrators belong to all communities—Hindus, Muslims Sikhs, Buddhists, Jains, Christians, Parsecs etc. India enjoys a fair measure of communal harmony, illustrating the principle of unity in diversity. Still fundamentalists and other communal forces, mostly paid agents of foreign governments, strike discordant (harsh and unpleasant) notes and seek to create communal troubles. The Govt. should put down such elements with a strong hand and impartially. These agents are out to tarnish (blacken) the fair name of India. Yet there is no scope for complacency (feeling safe and satisfied). We shall have to remain alert and watchful and bundle out the mischief-mongers (makers). The school books, especially the history books, should have to be written on a new pattern — to foster (step up) secularism. India Govt. is trying hard to delink religion form politics. There are political parties still in India that are organized on communal fines. There are parties which have taken up anti-Muslim attitude to secure more Hindu votes. Likewise, there are parties that seek to go out of their ways,—to please the Muslims so as to cash in Muslim vote banks. Fortunately, secular outlook is fast developing and secular forces have struck roots in India. To ensure secularism all the citizens shall have to be more cordial and tolerant. The responsibility of the mass media—Newspapers and Periodicals, the Cinema and Theatre, Radio, Television etc. is still greater,—to educate the common public on proper lines. All religion is essentially the same. It is to be noted that God is one, people call Him by different names. Pandit Nehru has pithily (pointedly) said—. "We may belong to different religions but we can equally become sons of mother India."
Comments