Help me to chose the proper photodetector

[JENIBHA]

I am going to use two LEDs of wavelength 660nm and 940nm. Help me to choose proper photodetector for detecting the light signal of these wavelengths.

 

[Harald Kapp]

No need to use capitals in the title. I changed that.

Theoretically you can use the same type of LED for detecting the light. Have you done any research of your own to narrow down the possible choices? The datasheet of any photodetector should contain a diagram showing the sensitivity of the detector versus the wavelength of the incident light.

 

[GPG]

Pulse-oximeter? A silicon photo diode will cover it.

 

[duke37]

In RadComm a few months ago, there were some articles on using LEDs to communicate. They managed several kilometers and used the same LEDs (Cree) for transmission and reception.