How to avoid two times 'both' in this sentence

Solution 1:

There are many grammatically correct ways you can convey what you are trying to convey with this sentence. I don't understand what most of the stuff in the sentence is so if my suggestion needs some tweaking please do so. It is more about changing the structure.

Original

"In both excitation and emission beam path a Mach-Zehnder interferometer is introduced, both of which exhibiting equal delays."

Suggestions

What is tripping me up here is the tense. Everything is happening in the present tense which is valid but it causes the sentence to sound clunky and it makes the structure difficult to massage.

Here is one possibility: "A Mach-Zehnder interferometer is introduced in the excitation and emission beam path resulting in equal delays."

or (In case the words 'resulting in' and 'exhibited' aren't synonymous enough in this context)

"A Mach-Zehnder interferometer is introduced in the excitation and emission beam path where each exhibits equal delays." -- This is not perfect but it simplifies the structure of the sentence.

Hopefully something here puts you on the road to a final answer.

Solution 2:

Given that I'm not familiar with the subject matter, I'll play it safe. How about:

In both excitation and emission beam path, a Mach-Zehnder interferometer is introduced –each exhibiting equal delays.

However, if your sentence means what I think it means, I would prefer:

With the introduction of a Mach-Zehnder interferometer, equal delays are exhibited in both excitation and emission beam paths.