Fiber Definition and 202 Threads

If raw carbon fiber has strength of say 4000 mpa, how come it is reduced when put in epoxy laminate to become only 950 mpa?

The circle is the fiber over Minkowski spacetime for electromagnetism? I want to make connection to the classical vector potential via some " picture" involving this circle. Does the following come close? Can I consider a 3 dimensional surface in C_1XMinkowski space that at a given slice of...

Hey all, I'm trying to design a clamp that has to hold onto a hollow carbon fiber tube, approximately 2.5 inches in diameter. The clamp will be bearing a 15-20lb load. The carbon fiber will be at angles from 20-70 degrees from a vertical axis. I'm curious if there is a polymer that can be...

Hello there, I am wondering if some specilalist would point in me in the direction of procedures to determine the load in a fiber in a composite material made of aligned fibers (let's say at alternating angles $$+/- \alpha$$). I understand you could simply compute the strain in a convenient...

Hello. I know how to realize an homemade fiber optic using some food jelly. Are there other materials, at amateur grade; to replace jelly ? ( NB this item has to be used in high vacuum, and jelly is not convenient for this use)

That's how the internet works across oceans, correct? I understand how a fiber optic cable transmits information, but how does it transmit everybody's information at once in just one dollar coin sized cable? One after the other? I find that hard to believe given how fast the internet is, even at...

My teacher said that instead of using a fiber optic made of just one material we could use a set of materials with progressively low refractive index to turn the light back in, like so: In the case of a continuous variation of refraction index, how can you do the math. Can you please show...

Hello, I would like to ask something here. If I would like to combine metal and fiber, what method is the the best because we can't simply glue them together. what material can hold them together. And can we test the strength of them after they stick together using ANSYS software? It would be...

I am trying to design a system that will carry light for illumination along a fiber optic cable. I see that there are many thicknesses of fiber optic cable - however I am unsure of the purpose of this. I've never heard of a 'density' of light that you can put into a cable - is there such a...

Say we have laser light propagating in the +z direction and polarized in the x direction that then enters a fiber optic cable. Let the fiber optic cable, of some length, be quite jumbled up so that the light photons are guided in a crazy path, kind of like a jumbled up ball of string. Let the...

Hi, A colleague of mine at work has this idea of using a focusing lens to focus the visible light into a optical fiber and guide it to some destination, e.g. room with no windows. I have no experience in optics, or in QED (only some "layman" knowledge of monochromatic light and its...

Hi guys, I was wondering if it is possible to use raw carbon fiber or fiberglass fibers without any sort of binder or adhesive epoxy in a rope or an unidirectional ribbon as long as the load is uniform, predictable, and in one direction. I think it would be less vulnerable to crack...

Hey everybody, a couple years ago, I came across the top gear video for the Arial atom: a ~1000 lbs road legal 'go-cart' with a supercharged I-4 engine with a power to weight ratio of 600HP/Ton. Even though the body is already light, I would love too (once I get the time and resources) build...

Need on urgent basis as to design supercell lattice of pcf

Hello Forum, the numerical aperture NA of a fiber optics is given by the square root of the squared core index minus the squared cladding index. The NA indicates the angular ability to collect light from the outside of the fiber, i.e. the max semi-angle over which light will enter the fiber...

Homework Statement In the attachment below, a ray of light undergoes total internal reflection in an optical fiber such that the angle θ between the ray and the interface is 47°. Assuming the fiber is surrounded by air, what is the minimum index of refraction necessary for this to occur...

Is it possible to have a fiber optic wire spliced onto another (or starting from 3 separate fibers) to form a Y shape and have loss-less (or close thereto, as good as a normal splice) transmission from 2 of the fibers into the third? I know this wouldn't work for double-clad fiber or for...

Hello this is me first post on here i don't know if this would be the right section but I'm trying to design and build this spring to only deflect 2-2.5 inches the force on it will be 200 pounds falling from 6 feet and coming down on the the two circles. my problem is i need to learn how to...

hello,i just want to know how the fiber bragg grating is being affected by the pressure that act on it? and where is the reference that i can refer to further reading..thanks

Has anyone use fiber optic interconnects in their computers? I read an article suggesting that this is the way to go to move data really quickly, and it got me interested. My google search's have primarily just resulted in company's trying to sell connectors, etc. etc... Any actual...

I was reading this journal on FO-PPR sensor and had a doubt. Couldn't exactly google for an answer as it was unclear. "Integration of fiber optic-particle plasmon resonance biosensor with microfluidic chip" by a group of scientists. I have attached the pdf. Under the section "Preparation of...

I've made fiber laser system. Previously, there's no problem in my set up and achieved good result. Further, when I want to repeat that experiment with similar set up, spectrum shows quite worse than previous. I'd try to check,change certain new fiber components,connectors but it still worse...

Hello..I'm a undergrad student from hyderabad ,India. Presently I'm am doing a theory based research project on fiber optic current sensors ..which are mainly used to sense current in substations . Recently i got a paper when i googled on the net. It was titled Temperature and Vibration...

Hey guys, I've often seen in the definition of a Fiber bundle a projection map \pi: E\rightarrow B where E is the fiber bundle and B is the base manifold. This projection is used to project each individual fiber to its base point on the base manifold. I then see a lot of references to...

I am a lisc. Auto body tech, and I have a customer who wants a Carbon Fiber roof on a Volkwagen bug, I can fabricate a inner frame, and bonding will not be an issue, (according to paint rep) The hard part is I want to do a flush seem and have paint blend into carbon fiber. I will "butt" match...

We have a spectrometer in our lab that collects light through a fiber optic cable, however it also sends a 532nm laser down this fiber optic cable. My background isn't in optics, and it would seem to me that the returning light (which is typically around 694 nm) would interfere with each...

Dear all, I'd like to know if there is a way of reducing an image and launching it into the core of an optical fiber. By other words, I'm not interested in the spatial distribution of the light (the image itself) but I'm interested in gathering all the light coming from the scene and...

Dear All, Many thanks for reading this query. Actually, I am having problem in measuring the mode fields of Optical fiber at the core-cladding interface analytically for modes LP01 and LP11. The modes are normally given by eq 2.165 (image attached). To my knowledge these constants A and C...

I am trying to model light that (1) exits a multimode fiber (2) passes through a cylindrical lens system and (3) enters a multimode fiber (and yes I know that a cylindrical lens system is not ideal for fiber coupling). The radius of curvature for each of the cylindrical lenses in my system...

I don't understand why the constructed fiber bundle E have g_{\alpha \beta} as its transition function. The problem is in the pdf file,thank you!

I have one hollow core fiber, the core is around 20um, Numerical Aperture is 0.03. The spot size of Ti:Sapphire laser is around 2~2.5mm. So I used focal length 50mm. But only very few power can be achieved (6uw). I wonder the reason. Could someone please give me some suggestions?

hello can someone suggest a simple fiber optic pressure/temperature sensor that can be constructed ...with reasonable accuracy and less equipment... i came across a few papers about the same...but not sure about the scale and precision required... please help thanks

Homework Statement I'm taking an introduction course in optics and I came across this exercise which I can't find how to solve: "Two light pulses with different wave lengths 500 and 600 nm is sent into a 1 km long fiber. n(610 nm) = 1.399, n(600 nm) = 1.400, n(510 nm) = 1.448, n(500) = 1.45...

If a TEM00 output laser source (regarding both cases of single frequency vs multifrequency) is used as input into a multimode optical fiber, is it possible for the output of the optical fiber to be multimode?

... your nose and down your throat? I had a throat ache that wouldn't go away, and so to see what was going on, they did this medical procedure. The interesting part is that I never saw it coming. They asked questions, cleaned away ear wax, sprayed a liquid in my nostrils, and out of no...

I currently have a laser set up that sends three lasers (red, yellow, green) into an optical fiber. On the other end of the fiber, the emitting light is shooting in essentially one forward direction. Does anyone have any suggestions or a suggestion on a certain material that if put on the end...

I am working on a project and am combining three laser beams in an effort to make artificial white light out of the end of the fiber. It is currently producing about 1 mw of power. How could I increase the power out of the end of the optical fiber?

hi, I've been toying with the idea of converting my mini cooper to an electric car, and I'm brainstorming ways to reduce the weight as much as possible. I came up with the idea of a carbon fiber frame to replace the heavy steel one, I found a company that can do it for me, but I was wondering...

http://news.blogs.cnn.com/2011/03/09/japanese-company-announces-breakthrough-in-carbon-fiber-technology/ Is this really feasible? I was under the impression that mass production of carbon fiber structures like this was still too slow and the fiber too expensive to make? Obviously I'm...

In optic fibers the how do v transmitt the information? will not there be interference of light as different wavelength of light travel in core?

Homework Statement Homework Equations \frac{\delta{F}}{\delta{y}} - \frac{d}{dx}\frac{\delta{F}}{\delta{y'}} = 0The Attempt at a Solution I'm having trouble setting this one up. If I let the functional be F(x,x',y) = n(y)\sqrt{1+(x')^2} Applying the LE equation I obtain...

Hey all I am using optical fibers as a read-out medium form a PCB. I see interference in the data through this fiber. Can someone shed a light on the interference patterns on the optical fiber? Usually one should not see any electronic noise in fibers. How true is it and how to get around it...

Hello, I have a 12x12" fresnel lens and I want to place a 14mm diameter fiber optics cable at the focal point to transport the light ~2.5 ft. Would there be any heat loss? And what percentage of the light would exit the fiber optics? Thanks, Fritz Laun

In The Road to Reality, § 15.2, Roger Penrose introduces the concept of a fibre bundle. Here I'll modify his notation to that of Wikipedia and other sources, so that B stands for base space (rather than the bundle), F for fibre, and E for the total space, which I think Penrose calls the (fibre)...

Can anyone describe basic inspection techniques and processes of cleaning for fiber optic cables

Hi, everyone: I am trying to find a result for the number of bundles (up to bundle iso.) over a fixed base and fixed fiber. For example, for B=S¹ , and fiber I=[0,1] I think that there are two; the cylinder and the Mobius strip. I think that the reason there are...

Hello everyone, Am having a research about the use of fiber optics in illuminating a room for example by taking solar power. What are the formulas that are used in order to know how much length do we need and how many fibers we need in order to have for example the power of a 60 watt lamp...

Homework Statement Sorry if this is the wrong section. Please redirect me if there is a more appropriate one. I'm looking at the timing spread in the time of flight of photons through fibers in a fiber optic faceplate. Essentially the minimum time for photons to propagate through one of the...

I'm currently designing a dual port 1000Base-T Gigabit Ethernet circuit card. My problem is that I do not have much space to work with on my board and the dual port RJ45 Magjack is taking up a ton of space. To save space I've been looking to switch to a fiber-optic system with much smaller...

Is it true in complete generality that every fiber bundle with contractible fiber have a global section? Or do some sort of restrictions on the bundle need to be made? I ran across a mention of this fact in Guillemin and Sternberg's "Supersymmetry..." and I'm not sure how to prove it.