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Questions related to Optics
I'm working on birefringence in photonoc crystal fibers. but now i have a question about the positive effects and applications of birefringence.
19 October 2016 1,911 4 View
I have implemented one algorithm for optic disc detection. Results of the algo. is needed to be compared with ground truths of stranded data set such as STARE and DRIVE. But I don't know how to...
03 October 2016 467 3 View
I'm working on method of creation and design an objective that working in the conditions with high radiation levels.
03 October 2016 1,469 9 View
I am trying to get decent power out of a fiber I am coupling to my laser (dynamic range: 100mW) but am having a hard time. The fiber is 400um multimode, 0.39 NA and is connected to an SMA adapter...
29 September 2016 7,723 21 View
Hi folks, I am going to find the band structure of a 1D photonic crystal waveguide by COMSOL. There is an example in application library for 2D photonic crystal with a 2D geometry. In the example...
28 September 2016 5,513 9 View
Hello. I have the following situation. Laser beam: D=5 mm diameter 1/e2, lambda=1064 nm, CW, TEM00. Fiber: NA 0.13-0.15, mode field diameter w=5.3-6.7 um In a technical note from Newport, I found...
14 September 2016 8,214 32 View
A zinc-oxide deposited excessively tilted fibre grating sensor was used for ambient refractive index sensing and encouraging sensitivity was recorded. But i need to know the resolution of this...
05 September 2016 2,276 4 View
Hello Is it possible to count cells in this kind of images with Fiji (ImageJ)? I tried to adjust the images in different ways but I never get a good image to count the cells with "analyze...
03 September 2016 6,723 1 View
How to measure optical channel capacity for an optical system (say 4f optical correlator) assuming a free space propagation, can it be measured using the imaging detector at the output end of the...
27 August 2016 3,786 1 View
When applying the basic error diffusion algorithm (ratser scanline with Floyd coefficients) I noticed that for low intensities the resulting halftoned image is almost black (a very little number...
18 August 2016 3,952 2 View
Anybody know the papers about diode laser pumped OPCPA/OPA?
29 July 2016 2,706 14 View
How can i check that the Circular polarized beam is Right-handed or Left-handed? I use a Quarter-wave plate to make the circular polarized beam. I don't mind any method.
21 July 2016 3,226 3 View
I m working on deposition of zno in silicon for ohmic contact I deposit aluminum on zno , the design is done in atlas,,, bt the problem I face is that I m not able to etch the aluminum .. plz...
19 July 2016 5,741 1 View
As far i have understood, the field form in vector notation can be described as E(R) = ( εx - i εy) * u(x,y,z) * e( - i l Φ) - Right Circular LG beam E(L) = ( εx + i εy) * u(x,y,z) * e( i l...
14 July 2016 1,594 3 View
Does circular polarized light with same screw like that of the chiral material always reflected or only under specific condition? What is the Jones matrix describing propagation through chiral...
14 July 2016 8,771 2 View
Currently, I am putting up a 2 micron mode-locked fiber laser oscillator based on SESAM. However, I am encountering several problems with my experiment, My questions are as follows,First of all, I...
08 July 2016 3,290 9 View
I want to simulate a phase conjugation module to compensate chromatic dispersion, using FWM.in the Article that I am regenerating , used Simulink but I think optisystem is easier than Simulink.in...
06 July 2016 2,509 4 View
Coupling is very selective to the mode. Different modes corresponding to different frequencies/wavelength can be coupled and filtered. May SPR phenomenon be useful to get very narrow band filters....
03 July 2016 8,962 3 View
I have been used the SOPRA database as well as some info from websites as http://refrativeindex.info/ http://www.filmetrics.com/refractive-index-database/ but unfortunately, i can not find the...
18 June 2016 2,244 4 View
I have a SESAM and a rare-earth doped fiber (Nufern-TDF-25/400) to do experiment, actually the SESAM is from Batop, its modulation depth is about 20%, the linear cavity is used. I also use the...
17 June 2016 4,678 2 View
I wish to get two Gauge Blocks with lines on side faces. I need these to validate line scale measurement with long Gauge Blocks Can someone suggest a firm?
10 June 2016 6,760 2 View
Thin-film optical anti-reflection coatings are often specified at about 0.1% - 1% transmission loss. For a wavelength-specific V-coating, 0.1% is probably a good estimate. But does anyone know...
08 June 2016 8,683 5 View
Hello everyone, I am attaching herewith few time domain visualizer output got from simulation using optiSystem, and some voltage overshoot and undershoot is noticed, it is seen in most of the...
29 May 2016 2,145 4 View
- what is the physical reasoning behind it - reference of the paper
26 May 2016 5,159 5 View