Did anyone observe asymmetry in Four-Wave Mixing conversion efficiency for up and down conversion in a semiconductor optical amplifier?

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

How can I integrate a routing protocol in a tiny device (e.g. Raspberry Pi)?

Hi Community, I'm facing the issue of integration/compiling a new routing protocol in a WSN simulator. The final goal is to successfully add, configure this routing protocol in hardware devices...

01 March 2021 9,332 6 View

Gas sensor response and recovery time independant of flow rate and chamber volume?

I am trying to obtain the response and recovery times for my gas sensor device. It appears the the response/recovery times are primarily dependant on the flow rate of the gas I inject into the...

26 February 2021 1,511 3 View

How to calculate battery consumption for IoT device?

Hi, everyone I'm working on a privacy-preserving algorithm that will apply to IoT devices. So, I need to measure the power consumption by implementing this algorithm. Any suggestion, advice,...

25 February 2021 8,749 6 View

How the Ground Plane implantation is performed without damaging (and w/o varying the undoped nature) the top Si (8-10 nm) in FDSOI technology ?

It is a general practice to introduce Ground Plane in FDSOI devices under the BoX. The Ground Planes are introduced by Ion Implantation through Top Si layer and Buried Oxide. I wanted to know that...

24 February 2021 5,974 4 View

How to troubleshoot Electrochromic Films and Electrochromic Devices?

I am trying to characterize an electrochromic system. The system uses ITO electrodes on glass, WO3 as the electrochromic film, and NiO as the ion storage layer. When I deposit NiO and WO3 and...

23 February 2021 9,592 2 View

Can a semi-conductor material have different absorption coefficient?

Does the absorption coefficient of the semiconductor changes with the change in the structure of the semiconductor? If you have a thin film and nanowire of the same semiconductor, will the...

23 February 2021 9,799 4 View

How we can measure Kemp % in wool without using of benzene?

Would you please let me to know about the methods for measurement of medullation and Kemp % on animal? My problem is that the wool sampling and sending to laboratory is not possible. So I would...

21 February 2021 7,260 4 View

Seán Ó Dúill

yes, and its been observed and documented for 30 years

S. Selvendran

yes, down converted frequency is slightly lower conversion efficiency compare to the up conversion efficiency. the paper entitled " Analyses of semiconductor optical amplifier (SOA) four-wave mixing (FWM) for future all-optical wavelength conversion" may be useful to you regarding your doubt.