Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

RF/IF signal to optic converter

Status
Not open for further replies.
A

ali_th

Member level 3
Joined
Mar 30, 2007
Messages
60
Helped
4
Reputation
8
Reaction score
3
Trophy points
1,288
Activity points
1,630
Hi Dear friends,
I need to send 80 MHz bandwidth in 300 MHz center frequency via fiber optic. So, I search for RF radio to fiber optic converter and vise versa.
The power of the transmitted signal is not high. Could you introduce me some available products which are relatively small. I prefer chinses sources and products, because it is easy and more cheap for me to handle it.
Thank you.
 

All you need is a "bias tee" (https://en.wikipedia.org/wiki/Bias_tee). This lets you apply a DC bias current to your laser diode (or LED) to set its intensity to the desired value and AC couple on your RF modulation.
You can buy prepackaged (and SMA/BNC/etc terminated) bias tee's or roll your own with discrete L's and C's (and optionally R's and ferrite beads).

300-ish MHz will be achievable by pretty much any laser diode intended to be modulated (and an obvious choice would be a fibre-optic transceivers/transmitter module) and you *may* have success with garden variety LED's. (I've had 50-200MHz performance out of IR LEDs before).

Good luck!
 

Dear thylacine1975,
Thank you for your informative response. But I need an on-shelf available product. if you can introduce some sources with a prepare product it could be very useful for me.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top