How to mathematically calculate the penetration depth of skew rays in a optical fiber?

In waveguide based fiber optic sensor, Meridional rays have much higher penetration depth than the skew rays. Is there any mathematical formula to calculate the penetration depth for skew rays in...

09 October 2016 4,613 3 View

Is their any special type of Single mode fiber(SMF) to guide a Bessel beam?

08 September 2016 9,133 3 View

How to calculate the spot size of zeroth order Bessel-Gauss beam inside a fiber or waveguide?

When we couple a Gaussian beam into a Single mode fiber, then the spot size of the Gaussian beam (W) is a fiber dependent parameter which is expressed as: W= a.*(0.65+1.619*V^-1.5+2.879*V^-6)...

08 September 2016 7,790 4 View

How to guide a Bessel beam or higher order mode through a single mode fiber?

A Gaussian beam is guided through a Single mode fiber. But if we propagate a Bessel beam through a Single mode fiber, then will it guide the Bessel beam like Gaussian beam? that means will the...

08 September 2016 7,347 6 View

What will be the expression for electric field of Gaussian beam in cylindrical co -ordinate??

01 February 2016 1,805 0 View

How can I find the propagation constant of different modes in a multimode fiber?

How to numerically find the values of propagation constant of different modes inside a step index multimode fiber using eigen value equation??

11 December 2015 7,451 3 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

Can polymer concentrations be calculated based on the number average molecular weight?

Hello, I spin-cast two different polymers onto wafers and measure their height as a function of initial concentration. For polymer A, I have the weight-average molecular weight (Mw) as well as...

28 February 2021 7,882 2 View

How can I publish a manuscript in free or low cost journal with good H-Index?

Dear all I am going to publish my manuscript which is from my thesis in a good H-Index journal but I found them very expensive(I don't have financial support) based on the exchange currency of my...

28 February 2021 7,800 6 View

Why am i not getting solid after reacting APTES with salicylaldehyde?

The reaction of APTES with salicylaldehyde in ethanol leads to the formation of imine compound yellow solid which is mention in literature, but I am not getting yellow solid I don't know why? when...

28 February 2021 2,955 2 View

The Shannon's index is inversely proportional to Simpson's index (1-D)?

I'm having a problem with my bloxplot with Shannon's and Simpson's indexs. The value of Shannon for my Community 1 indicating higher diversity (in relation of the Community 2), but have lower...

26 February 2021 3,033 9 View

What are the application of Fixed points thoery in Chemistry.?

It is said that fixed point theory has lot of applications not in the field of mathematics only but also in various areas. So I am looking for applications in Chemistry only..

26 February 2021 3,533 1 View