We demonstrate optical coherence over a broad spectral range of two independent fiber frequency combs. Additionally, we deomonstrate microwave stability of better than 2 x 10-14 in 1 second for an optically integrated fiber frequency comb.|We demonstrate optical coherence over a broad spectral range of two independent fiber frequency combs. Additionally, we deomonstrate microwave stability of better than 2 x 10-14 in 1 second for an optically integrated fiber frequency comb.

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