Non-inverting Optical Modulator Driver

I have a JDSU H301 modulator driver for driving a LiNb Mach-Zehnder at

10 Gb/s. However, it is an inverting driver, which means it expects negative input to produce positive output. Is there any way to externally switch the module so it is non-inverting? Does anyone make non-inverting modules, or are all telecom driver amps supposed to be inverting? I find it frustrating that JDSU doesn't mention that the amp is inverting on their data sheet or app note for the H301.


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O. P. E.
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One possibility is to change the DC bias on the M-Z. You ought to be able to move the operating point to the other slope of the sine curve.


Phil Hobbs

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