Optic Definition and 126 Threads

I am looking for group of material that behaves according to the following: (1) When a certain laser light passes perpendicular to the surface of the material it enters and exits unimpeded (2) However, when another laser light (with direction parallel to the surface) enters the material, the...

Imagine a closed loop of fiber optics, How long will a photon be able to stay inside the loop before dissipating all it's energy, or does it not dissipate?

Actually out of my personal interest to learn & upgrade my skills I have self volunteered self development of Photonics Simulation software on Python platform. I am basically a software developer. As such I seek some technical information for same related to its development activity. Can you...

Hello every body. Has anybody used Fiber Optic Gyros? How accurate they are? How about the price range? Could anybody help me select a suitable actuator system/motor mechanism for, say a camera stabilization or a gun stabilization using a fiber optic gyro. I want to get rid of mechanical gyros.

Dear friends I have been working on a new way of illuminating microscope specimens. Cannot disclose the innings of it since all is under development. Nevertheless I attach photo since I think you will find it interesting. That is the mouth of a honey Bee, photo compares standard bright-field...

Hi, I have some fibre optics questions that I can't seem to get my head around. How does providing a cladding of a refractive index slightly lower than the core increase the critical angle? I can do the mathematics to see that it does however is there a logical explanation. Why is increasing...

"A diode laser has a divergence of 5mrad in the p-direction and 1 mrad in the s-direction. Design an optical system in front of the laser which will make the output circular, and calculate the resulting divergence." Attempt; I am taking the course optic and waves, and the instructor did some...

Difference between "physical reach" and "logical reach" of fibre optic Undergrad physics student here, working with fibre optic cables for my final year project, specifically to do with amplifying signals for fibre-to-the-home internet service. I understand the physical reach of fibre optics...

Homework Statement In a given communication system the attenuation of a optic fiber is 0.5 dB/km, existing an extra increment of 1dB every 10km due to the junctions of the fiber. Find the maximum length that the fiber can have, knowing that the debited power by the emmiting laser, P_{0}, is...

It's given, "fibre optics are thin to accommodate single electromagnetic mode" what do they mean by single electromagnetic mode...? And also mentioned it has high bandwidth, i know that bandwidth is difference of highest and lowest frequencies of the signal. So if fibre optics has high...

Does anyone know of some good references regarding how fiber optics are effected while aging in the field? What determines the life span of a fiber installation? Specifically, what causes the signal quality to degrade, and how quickly does it degrade. (That is, how does the attenuation across...

Hey I am about to start a research paper on the physics concepts involved in relation to fibre optic cabling and copper cabling. In my report I have to discuss how the physics in both relate and differ from one another. In terms of fibre optic cabling I have decided to talk about snell's law...

Homework Statement A multi-mode fiber optic cable has a core diameter d = 115 mm, ncore = 1.42, and ncladding = 1.17. What is the largest possible angle θin relative to the surface normal that light can enter the fiber (i.e. pass from air into the fiber core) and experience total internal...

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...

Question: A biconvex glass (n = 1.70) thin lens is to have a +35-cm focal length. If the radius of curvature of each surface is measured to be the same, what must it be? Give your answer in cm to two decimal places. My answer: I used this equation 1/f=(n-1)*(1/r1+1/r2), I got an answer...

Right infront of the Pituitary Gland is the Optic Chiasm. Now I know when the Right and Left Optic Nervs come into the Brain they Cross here. But is this Optic Chiasm a Gland or do the Nervs Twist or what is it?

Hello. I'm looking for a lens that can collimate (or focus far away >500mm ) a light coming out from a LED. before I give more details is this even possible? Thanks.

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...

Homework Statement Suppose you wanted to be able to see astronauts on the moon. What is the smallest diameter of the objective lens required to resolve a 0.68 m object on the moon? Homework Equations I was told to use Rayleigh's Criterion but i do not see how to relate the equation...

So I am currently using a high temperature epoxy based strain adhesive on a polyimide coated single mode fibre. This however gives rubbish results in terms of creep at anything above 160 deg C. Does anyone have any experience with this type of problem at all? I know that there are...

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...

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...

Log question The diagram shows a log being pulled up an Earth slope from X to y. How much work is done against friction, the answer I get is not among the 4 choices.. also the part messed up by the scanner says 1000N force due to friction The diagram shows a boy doing...

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...

[HELP!] A Confusing Optic Problem Homework Statement Prove that, according to the figure below: and Homework Equations The Attempt at a Solution I've been using the basic equation above (the integrated lenses with radius r1 and r2) but it's still confusing. Is it the total...

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...

Hello seniors..im a undergrad student from hyderabad ,India. Presently I am 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...

"Optic Cable"? http://splintercell.wikia.com/wiki/Optic_Cable I'm thinking about making one just for fun, I know how to make that display device (ARM+LCD screen), but I'm really clueless on how to make the cable. How should that be done? I know it's going to cost a lot and I know the...

I can't find the THEORETICAL definition of "strain optic coefficient" online. I googled and wiki'd enough. Can someone provide me with one, please?

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...

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

What is an optic axis of a calcite crystal ?

I got an SMS educating people how to find out the presence of a hidden cam in a trial room of a textile showroom or bathroom. It goes like this :- "If you can't make a call in the room,the there is a hidden cam. This is due to the interference of the fibre optic with the signal transfer."...

Homework Statement I saw this question on this forum and the answer given At first I thought that it was obvious why reducing the width of the fibre would reduce the multipath dispersion. But having tried the problem with maths, I'm not so sure. Can anyone tell me where my maths...

the title pretty much. thanks.

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?

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?

I have 3 questions to solve in 2 days for my coursework.. All the questions are about optical physic, thanks for the answers.. Homework Statement PROBLEM 1 Refracting prism with the angle O=60° between the refracting surfaces is made of glass with a refractive index n . If the angle of...

Hi. This is my first message in this forum. I'm not English, so sorry my spelling. Homework Statement Calculate the optical path done by a meridional ray, supposing it covers a horizontal distance, d, in z-axis direction. \gamma_0 is the launch angle (with z-axis).Homework Equations Optical...

Homework Statement Suppose we have a microscope made out of two lenses, both with a focal length of 25mm, placed 36.5mm apart. Find how far in front of the first lens should the object be placed to assure that the image is magnified at least by a factor of 75? One more: Suppose that...

A blade parallel faces is 5 mm thick. Taken to a microscope it appears that, to pass on the focus of a surface point to a point on the underside of the blade should move the cannon from the microscope 3mm. What is the refractive index of the material it is made the blade? 5/3 Thx EDIT: Sorry...

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

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...

Homework Statement Suggest how the energy difference arises between the optic and acoustic branches in a 1d diatomic chain.Homework Equations The Attempt at a Solution I know that on the optic branch atoms oscillate in anti-phase within the unit cell and in phase in the unit cell on the acoustic...

Does anyone know of any links to some good fiber optic information? I'm not looking for suppliers or sales pitches...rather something like www.Microwaves101.com , but for fiber optics... Other than arguments on comparisons, I haven't found too much in PF. Thanks.

Homework Statement Hi everyone, I was wondering if anyone can help me out with my project in physics. Our goal is to make the sun image appear on a panel at the end of a rail, using lens, to see if we can observe sunspots on the projected image of the sun. This is the materials we have...

Is the fibre optic cable cheaper than copper wire for transmission? I believe there is still loses in a fibre optic cable. As the critical angle of glass is 42 degrees, thus about 50% of the signal would be lost. Is that true?

Hello guys I am taking electro optic this semester. . I had a quiz last friday. I could not do couple of questions. 1.The reason of the 1550 nm fiberoptic systems are more populer than 1300nm is, 1550 has less attenuation? 2.What is the aprroximate value of the loss of present day fiber...