I ordered a large number of laser modules that look like the following:
When inspecting mine with a basic multimeter, I noticed a 90 ohm smd resistor is fitted on the module. I see no other components fitted on.
I tried searching for datasheets for different laser modules to get an idea on the maximum data rate these modules can produce, and so far I found one source online indicating its module (that looks like a large box with two beams) is 400hz maximum bandwidth (data rate).
I also found listings in the search engine indicating that some laser beams can go much faster than 400hz.
What is the actual specific name and unit number for these modules? I want to look the name up so I can get the datasheet and figure out the absolute maximum data rate I can use. (I'm doing slow data transmission through lasers as a test).