answersLogoWhite

0

Optical Communications

Optical communication is a form of telecommunication that makes use of light – the portion of electronic radiation visible to the human eye – as the transmission medium. An optical communication system includes a transmitter, a channel and a receiver.

105 Questions

Differences between semantics syntax and pragmatic semantics?

These are all divisions of the study of language. The differences are that semantics considers the meaning of individual words and phrases, syntax considers the evolution of language, and pragmatics considers how language is used and how those uses determine the other divisions.

Advantages of optical fiber communication system compared to conventional communication system?

# Optical fibres can carry more information as opposed to conventional cables. # Optical fibres are not affected by radio frequency interferrence # Information carried in an optical fibre can only be tapped physically (to steal information, the thief has to work on the optical fibre so that the light will travel to the thief)

What is Relationship between electrical and optical bandwidth for an optical fiber communication?

The electrical bandwidth refers to the frequency range that the electronic components in the communication system can handle, while optical bandwidth refers to the frequency range that the optical fiber can transmit. The relationship between the two bandwidths is important in ensuring that the data transmission is efficient and reliable. Matching the electrical and optical bandwidths helps to avoid signal degradation and distortion in the communication system.

What are the disadvantages of optical fiber communication system?

fiber optic cables are sensitive to design irregularity and and their cost is high.

What is project proposal?

Project Proposal

Description:

Proposals are directed toward a potential sponsor, such as your future boss, a funding agency, etc. to briefly outline

  1. the specific objectives of project,
  2. technical approach to be used in solving the problem or developing the product and
  3. the anticipated results of the project

and should answer the following questions:

  1. Is the problem sufficiently important to justify money, company time, and your effort?
  2. Is the project well defined and realistic?
  3. Have you outlined a sound approach, including your ability to perform the tasks?

Estimated Length:

10 pages plus Appendices

The body should carry the main message, while the appendices contain supporting information, data backing up your claims in the body, and detailed calculations which may be of importance to some readers who require additional details. If the appendix does not contribute to the overall document, don't put it in. You as the writer have to make the decision on what should be included or not. Try putting yourself in the position of the reader: an intelligent, lay person.

What is a Project Proposal?

A project proposal is written, to make an offer and to try to convince a supervisor or a future customer to accept it. In a project proposal you state that, in exchange for time and/or money, you will give them something that they want (an analysis of a procedure, for example), make something they desire (a prototype of a new product), or do something they wish to have done (redesign an existing structure). In other words, you are asking a decision-maker to invest a resource, (time or money or both), so that the project you propose can be completed, and your readers, whether a future supervisor within your own organization, or your client for your project, will invest their resources carefully. Therefore, it is crucial that your proposal answers questions your readers may have about what you propose to them. For example, the most important question your proposal readers will want answered is how does your proposal relate to them? In other words, what problem will it solve, what need will it address, and why is it important to them? Secondly, your proposal readers would like to know exactly what you are proposing to make or do, and how it relates to the problem you are describing. In other words, they will want to be convinced that you have a plausible solution procedure to the problem, and to know what this solution procedure involves. Your readers would also like to know exactly what they would be getting from a given project, and how much these deliverables will cost. Further, they would like to be assured of your capability to analyze and solve your project's problem, and produce the deliverables that you claim you will produce. A successful project proposal identifies and answers all of the above needs. In order to respond to those needs, a project proposal usually should include the following components:

A Title Page, which lists a brief descriptive title of your project, the names, titles and addresses of the individual(s) to whom the proposal is being submitted, the names, titles, and phone numbers of the individual(s) submitting the proposal, and the date of submission. Title Pages may also include additional information such as the proposed starting date of the project, the proposed project duration and completion date, and the cost of the project or amount of funding required.

A Table of Contents, which lists each of the main sections of the proposal, and the beginning page numbers for each section.

An Executive Summary, which provides a brief (about one page) overview of the proposed project. This is probably the most important section of your proposal, because it provides a clearly defined problem and proposed solution procedure, and a description of the expected project deliverables. The Executive Summary is often the only section of your proposal that some readers will read; and must present all the relevant information as clearly and effectively as possible. It is often the last thing to be written.

An Introduction, which provides more complete background of the project than the Executive Summary, and which indicates your knowledge of the organization, the current situation existing in the organization, and the problem itself.

Project Goals and Objectives, which serve to establish the scope and boundaries of the project in the form of functional specifications. If possible, this section should have quantifiable measures of performance. For example, "This project seeks to cut the maintenance costs by at least 20%" or, "The equipment will run for at least 2 hours on 4 AA size batteries."

Team Organizational Structure. This section provides a summary of the group's qualifications for the project. Identify key personnel and describe directly related education and experience. Also include each member's responsibility for the duration of the project. An organizational chart to identify the specific areas of responsibility of each team member may be appropriate.

Your Solution Procedure, which identifies the approach that the team will use to meet the project objectives. You should explain here your principal tasks, their duration, their sequence and their particular purposes. Wherever possible, the methods and task to be performed should be outlined in logical sequence and explained in detail. Do not assume the reviewer will fill in the gaps in your logic. Part of the Solution Procedure will be a proposed schedule. A common way of identifying project milestones and due dates is to use a graphic representation of the task relationships, such as a Gantt Chart (a bar chart showing timeliness for each principal task) or a PERT/CPM Chart (a network representation of the project that shows the sequential relationship between project activities). The Solution Procedure should also describe the relevant instrumentation and facilities required to complete the research or product development. The Solution Procedure should include a budget that estimates the anticipated R&D costs over the life of the project. Wherever possible, provide sufficient commentary on the budget to facilitate understanding by all parties involved.

Your Expected Deliverables, which should provide the reader with a description of the products and/or services they can expect from your efforts such as documents, equipment and software. Wherever possible, emphasize the ways in which your project deliverables will enhance the client's operations.

A Summary and Closing section, which briefly recaps the key points of the proposal. Summarize the current problem, the steps you propose to take to solve the problem, and the benefits to the client.

Tips for Writing Your Project Proposal

An effective proposal will identify and meet the needs of your readers by first considering what they will expect to learn from the proposal, and by then providing that information clearly and effectively. Your final grade for your proposal will be based on how well you have been able to do this, using the guidelines provided. Therefore, while writing your proposal, remember to:

Imagine yourself in your readers' position and ask if it answers all of your questions. Your client would like to know that you can provide a sound and concrete technical solution to the problem, along with a clear procedure for arriving at such a solution. They will also want to know that you can offer realistic and reasonable costing with demonstrated financial responsibility, and realistic and reasonable timing with intelligent and thoughtful planning.

Take into consideration that there are other possible solutions to the problem at hand, and examine the strengths and weaknesses of those alternative solutions.

Keep in mind that effective professional communication should promote goodwill between you and your client. Present an effective plan for communicating with your client, and promise quality control and reliability checks on work in progress.

Check spelling, grammar and punctuation before printing out the final draft of your proposal, and be sure that the final draft appears as a professional document, free of errors.

Make sure the proposal is paginated properly, and is also reader-friendly. In other words, is it laid out effectively, can a reader spot new sections easily, does it look professional, etc.?

Be candid and state where problems exist. Factual rather than promotional information is required.

Note that writing style varies depending on the writer and the intended reader. However following are often true:

Diversity of sentence structure is desirable to stimulate reader's interest, but should not unnecessarily add to the length or should not confuse the reader.

Your written proposal and future reports should emphasize the concise documentation of a technical, complex engineering activity.

Lack of needed information cannot be covered up by confusing statements.

Use concise sentences; nouns should not be I, we, there, it, this, etc.

Proposal Evaluation Criteria

Problem Statement:

Does the proposal show a clear understanding of the problem and company background?

Objectives:

Are the objectives clearly stated and measurable? Is there a clear relationship between the objectives and a solution to the problem?

Approach:

Does the proposal have a detailed description of what steps need to be taken to achieve success? Is there a justification of why the various steps are needed? Are project milestones established?

Deliverables:

Are deliverables clearly stated? Does the customer know what to expect at the conclusion of the project?

Resources:

Does the team have the resources, time, equipment, supplies etc. needed for the successful completion of the project?

Overall Impression:Is the proposal presented in a professional way? Would you fund this proposal if you were the customer?

What is attenuation in communication?

loss of signal strength as distance increases The reduction of signal energy during transmission.

What communication medium uses pulses of light?

Fiber Optics uses light to signal on and off with each pulse, copper cables use power frequency, high and low to signal on and off.

What is DID in telecom?

DID means Direct Inward Dialing Feature in the PBX features in telecom.

What materials are used in fiber optic communication?

Verizon FiOS & Verizon Broadband Services offer blazing speed & crystal clarity of the 100% fiber optic Fios network & proven reliability for their TV, Internet & phone products that will exceed your expectations today & keep you connected down the road.

cutt.ly/OjxOqZJ

In what field are the latest medical inventions?

In most medical fields scientists are constantly introducing new developments . It is probably in the field of Radiology and Imaging where most technological inventions have appeared in the latest years, but from laboratory technologies up to nuclear medicine, all large and small branches of medicine are constantly evolving in technology and systems.

What are the Elements of optical fiber communication link?

If light meets the inner surface of the cladding (the core - cladding interface) at greater than or equal to Qc then TIR occurs. So all the energy in the ray of light is reflected back into the core and none escapes into the cladding. The ray then crosses to the other side of the core and, because the fiber is more or less straight , the ray will meet the cladding on the other side at an angle which again causes TIR. The ray is then reflected back across the core again and the same thing happens. In this way the light zig zags its way along the fiber. This means that the light will be transmitted to the end of the fiber.

In reality the light which enters the fiber is a focused beam, consisting of many millions of "rays" behaving in a similar way. They all zig zag along the core of the fiber, crossing over each other, and filling up the core with light. A pulse of light traveling along the core of the fiber is really a bundle of these rays.

Whats the Speed of light in an optical fiber?

It depends on the material. The speed of light in a vacuum is c = 299,792,458 m/s. Any other material will cause the light to slow down and can be calculated from the material's refractive index. So, for instance, quartz has an index of refraction, n = 1.45. The speed of light in a quartz optical fibres will be:

v = c/n = 206,753,419 m/s.

The propagation speed of a fibre is usually given in terms of a percentage:

V = 100 x c/n.

For the quartz fibre, the propagation speed in 69% of c.

Optical fibres use the property of refraction to keep the light 'inside' the fibre. Using an inner core fibre and an outer 'sheath' fibre with a lower refractive index, the light can be totally internally reflected within the fibre with no need for mirrored surfaces.

What are the different types of fiber connector cite their advantages and disadvantages?

Screw terminals, braided eyelets, plugs and sockets, insulated screw connectors, wire clip connectors (wire push-ins), twists inside wire nuts, plain wire soldered joints, soldered wire joints to posts and soldered legs for integrated circuits on printed circuit boards.

For more information see the answers to the Related Questions shown below.

What are thea dvantages and disadvantages of optical fiber?

advantages are being able to communicate, and transmit information over long distances. unfortunately though they cannot transmit into space on there own, and can break - being made out of fine glass and plastic that they are!
disadvantages is that you get splinters from the fibres and the really hurt trust me ive had a few of those little suckers ha de ha

Which can transmit faster optical fiber or copper wire?

Verizon FiOS & Verizon Broadband Services offer blazing speed & crystal clarity of the 100% fiber optic Fios network & proven reliability for their TV, Internet & phone products that will exceed your expectations today & keep you connected down the road.

cutt.ly/3hVTqFz

What is tunnel effect in optical fibers?

You can find the answer in the link, it is in blog.ourfiber.com, a lot of professional article in this blog.

What are the top ten funny ways to get revenge on someone?

At work:

1. Hang a Klan outfit in full view of everyone that walks by his office.

2. Saturate his desk chair with spray adhesive, it stays very sticky long term.

3. Slightly loosen his bleader valves, just slightly.

4. Get a group of buddies to help you turn his car sideways between two others.

5. Jump him and glue his hands to his face.

6. Fill one of his cigarettes with tobacco / pot mixture. Everyone will smell it!

7. A little g** p**n sticking out bottom of desk never hurt anyone.

8. If he is a racist, make sure one black woman knows it.

9. Tie him up turn off the lights and lock the door.

10. Wire his office door handle to the nearest electrical outlet.

At home:

1. Late at night, light a roll of 1000 black cats outside his bedroom window. Do this night after night.

2. Using vegetation killer write "P****rt" on his lawn, Heavily.

3. Set off his car alarms in the middle of the night for weeks at a time.

4. Turn off his water main at the meter.

5. Vaseline, windshield, get it.

6. Sand in fuel tank.

7. Potato in exhuast.

8. While it's raining at night, drop off a bunch of bags of concrete in his driveway and yard, you gotta throw them hard.

9. Print fliers explaining how this person is so bad, name address phone number etc. Everyone in the neighborhood needs one.

10. Superglue filled key holes.

11. A few holes in his exhuast.

12. Trash day, tie the full bags to his rear bumper. Maybe they won't notice.

13. Remove a small patch of shingles at peak of roof on backside only.

Works especially well with vaulted ceilings. Its expensive. The water damage I mean.

14. Draw something in his driveway with vaseline.

15. Follow them around, make them think they are being followed. Paranoid people do crazy things.

Peacefully Disgrunted, Clam and collected. I will be OK.

Why optical communication is used in long distance communication?

Because it transmits data much faster, cooler, and with less chance of interference than metal cable.