What is Fiber: Definition and 224 Discussions

Fiber or fibre (from Latin: fibra) is a natural or man-made substance that is significantly longer than it is wide. Fibers are often used in the manufacture of other materials. The strongest engineering materials often incorporate fibers, for example carbon fiber and ultra-high-molecular-weight polyethylene.
Synthetic fibers can often be produced very cheaply and in large amounts compared to natural fibers, but for clothing natural fibers can give some benefits, such as comfort, over their synthetic counterparts.

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  1. S

    Multipath dispersion of a pulse of light in an optical fiber.

    Homework Statement Multipath dispersion of a pulse of light in an optical fiber. How is this problem solved?
  2. J

    Material dispersion calculation (optical fiber)

    Material dispersion in optical fiber is defined as D = (-λ/c)×(d²n/dλ²) λ is wavelength, c is speed of light and n is refractive index. I was given a graph of λ²×(d²n/dλ²) against λ, refractive index of core of fiber, index difference and diameter of the core and cladding. What I would like to...
  3. K

    Fiber Optic Refraction: Calculating Light Ray Distance and Reflections

    Question: A ray of light enters a light fiber at an angle of 15degree with the long axis of the fiber. Calculate the distance the light ray travels between succesive reflections off the sides of the fiber has an index of refraction 1.6 and is 10^{-4}mm in diameter.
  4. M

    Can a Steam Engine Be Made with Carbon Fiber Components?

    Would it be possible to build a steam engine using parts made primarily of carbon fiber? Any engine?
  5. C

    Laser to be used in fiber optics

    Homework Statement Which of the following can / cannot be used for fiber optic communication. What is the general rule / cut-off (in terms of wavelength) for deciding ? Thank you. Choices (Laser type/wavelength, nm) Argon fluoride (UV) 193 Krypton fluoride (UV) 248 Xenon...
  6. J

    Maximun bps rate on an ITU channel over standard single mode fiber

    I have to find the maximun bps that it can be reach using a point-to-point link of 40 km long of optic fiber. I use an ITU normalized channel (100 GHz optic BW). So, I can choose any electric modulation and any optic modulation, too. Anybody could help me? Any answer is welcome. Thanks.
  7. T

    Going completely fiber optic computers

    So, because light is so fast and fiber optic cables can carry 3 different signals at at time and travel at the "speed of light"; why don't we have the technology to develop a computer that uses all fiber optics instead of wires or optics and wires (if your lucky) I'm sure that if we did know...
  8. T

    Simple Fiber Optics Communications System

    Hi, it would be great if someone could give me a conceptual explanation of how a simple circuit of fiber optics communication works, since this is where the world is, in a communications sense.
  9. T

    Optical Fiber attenuation coefficient

    Hi, I am curious to know what is a typical numerical value for the attenuation coefficient of common optical fibre. Please don't include anything strange in the units like dB since I am new to that. Thanks.
  10. N

    Help with physics of carbon fiber guitar case suspension system

    I'm developing a range of carbon fiber cases for guitars, violins and laptops. The cases have a suspension system of high density closed cell foam pads which hold the instrument where it is strongest eg base of the body, where the neck joins the body. It has been suggested that it would be...
  11. B

    Stress on 25 micron Fiber Under Elongation Load

    This doesn't seem particularly hard, thought it was simply an F/A situation but apparently not. A fiber with a diameter of 25 micro meters is subjected to elongation load of 25 g along the fiber axis. What is the stress on the fiber? Is the applied stress a shear or a tensiles stress. I said...
  12. S

    Looking for a fiber optics paper

    I found an interesting paper a few weeks ago, but I haven't been able to find it again. The paper concerned using an electro-optic (LiNbO3) phase modulator to generate bandwidth on a pulse, and then using a spatial light modulator to shape the bandwidth and get a nice clean compressed pulse...
  13. N

    Coulomb's Law and insulating fiber

    A rigid, insulating fiber runs along a portion of the y-axis; the fiber isnot free to move. Gravity acts downward (g = 9.81 m/s2).A charge Qa = -3 µC is fixed to the fiber at the origin. A bead with a hole drilled through its center is slipped over the fiber andis free to move along the fiber...
  14. W

    How Do Fiber Lasers Function?

    I was wondering if anyone could tell me about fiber lasers. I don't mean those used as transmitters on optical fiber systems; I mean lasers that contain optical fibers as components. I know that it can be done, but I don't know what the structure is like. What part does the fiber play? Is...
  15. Ivan Seeking

    Fiber art: A new alternative to paint?

    This human interest story caught my attention. Could this be a new art form? http://www.lubbesmeyerstudio.com/_media/popups_and_thumbnails/l_poppies.jpg http://www.lubbesmeyerstudio.com/
  16. S

    Exploring Carbon Fiber Products: Resin & Epoxy Questions

    I am starting to learn how to make carbon fiber products i am not sure about what type of resin/epoxy? to use does the resin/epoxy give it that nice exterior? or is something else needed? any suggestions in general would be much appreciated thank you
  17. E

    Optical fiber transmitter and receiver (photodarlington)

    Hello, How can we convert parallel-to-serial address and send it as an optical signal? Have a look at the link below if you folks don't know what I mean - the last (3-4 lines) paragraph of the pdf file: http://www.hep.yorku.ca/menary/courses/electronics/3150/lab_manual/opt.pdf...
  18. cronxeh

    Carbon Fiber Kits: Safety Test Results for Motorcycle Parts

    Hey there. I was browsing a motorcycle forum and stumbled upon a particular place where the moderator was in the process of selling his own manufactured "carbon fiber kits". Naturally I asked him if the people who designed those replacement parts had any engineering background, and if he had...
  19. O

    Can I Use Carbon Fiber to Strengthen Gas Powered Scooter Parts?

    Im looking to have several gas powered scooter parts made in carbon fiber from a cad file. Such things as steering pole, rims, deck, air scoop, and a distant goal of a frame. scooters in question www.goped.com. I understand some basics of carbon fiber, but pretty much just what you can learn...
  20. tandoorichicken

    Diameter of Human Muscle Fiber - Bicep

    On average, what is the diameter of a human muscle fiber (say, a bicep muscle)?
  21. A

    Guiding Wave Through Diffraction in Photonic Crystal Fiber

    Hi, Can someone tell me how a wave is guided (in a fiber for instance) thinking in term of diffraction (or scattering) and not in term of successive reflections. And my second question is : would it be possible to "extrude" a plan diffractive element in a fiber to guide wave and have the...
  22. G

    C vs. Fiber Optics: Speed Comparison and Myths Debunked

    Is C less than 300,000 kph when traveling through fiber optic cable? Would a pulse of light travel any faster through a straight fiber optic than through a tightly coiled fiber of the same length? Thanks, Glenn
  23. C

    Fiber Optic Cabling: SC & ST Connectors Explained

    Does anybody know what the SC and ST connectors stand for [?] thanks joe
  24. Evo

    Biomimetics - optical fiber sponge

    I thought this was interesting. Anyone here into biomimetics that has additional examples they can share? (see link for full article) Bell Labs scientists find novel optical fibers in deep-sea sponges Scientists from Lucent Technologies' Bell Labs have found that a deep-sea sponge contains...
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