Use of Optical Fiber

No.

RTFM

yes, no, maybe.

Pick and chose.

You will definitly need a converter for the optical signal. The rest is what you want.

If you are referring to "single-mode" verses "multi-mode" fiberoptic then the answer is; Yes.

There is a necessity of changing a flow of electrons to a flow of photons. Outside of that requirement you must meet the input and output interface standards of the electron to photon converting device.

fiber optic is just a via to send a signal. Electronic circuits need to convert light in electric signal to understand and analyze. So it is necessary to use signal converters from optical to electronical signal ( OptoRS232 or OptoRS422)

R9Regs

If you want to transmit anything through fiber (other than FM) the signal must be converted to an optical signal. The signal is a series or sequence of 1's and 0's ie light/laser on/off (unless its FM). So you'd have to work backwards from there. How will you convert your serial signal to a series of 1s and 0s? You'll probably want a RS-whatever to TTL then a LED/Laser driver cct.

On the other end, you'll need to know how to 'read' the received signal and convert it back. Depending on the distance you may need to start off with a pre-amp then an amp then a comparator (to 'clean' the signal) then the TTL to RS-whatever converter.

Other than that, I'd be breaking our disclosure rules. There is enough hints there to get you started. Good luck