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How to send RF Modulated Signal using Fiber Optic

Hello I am new to this.

I am looking for a clean way of transmitting analog signals via a fiber optic cable. So the constraints are the method must allow 10 Mpbs sample rate or higher and if a adc of some sort is used then it must be 12bits or higher. I was looking at the laser driver specifically the ADN2525 and would like to know if it has the capability to send a RF signal (AM or FM) in place of the Pattern Generator? I understand that all of the laser drivers were not designed for this application but am wondering if these drivers can be used in this type of application.

I appreciate any feedback! Thanks!

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  • Dear Martin,

    RF modulated signal, even counted it in baud rate, most of them are linear signals in each baud to keep the AM, FM, and PM details. In this way, a laser diode driver for this type of applications should be a linear driver.

    ADN2525 is a quantizer, current sink device to work with directly modulated lasers: DMLs.

    It only drive the laser IBIAS linearly, but drive the high speed IMOD current in limiting mode.

    Because of this, it may not be a right laser diode driver device to support RF modulated signal.

    Hope this is useful to your device selection.

    Best Regards,

    Dongfeng Zhao

Reply

  • Dear Martin,

    RF modulated signal, even counted it in baud rate, most of them are linear signals in each baud to keep the AM, FM, and PM details. In this way, a laser diode driver for this type of applications should be a linear driver.

    ADN2525 is a quantizer, current sink device to work with directly modulated lasers: DMLs.

    It only drive the laser IBIAS linearly, but drive the high speed IMOD current in limiting mode.

    Because of this, it may not be a right laser diode driver device to support RF modulated signal.

    Hope this is useful to your device selection.

    Best Regards,

    Dongfeng Zhao

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