Multiple-access ultrastable frequency dissemination based on optical frequency combs via a fiber link

We demonstrate an optical fiber-based, multiple-access frequency transmission using two optical frequency combs. The experimental results using the Allan deviation analysis show that with the phase compensation technique, the frequency instabilities at the remote site are 8.7 × 10 −15 /1 s and 1.0 × 10 −17 /10 3 s, and at the accessing node along the fiber link, the frequency instabilities are 6.9 × 10 −15 /1 s and 1.1 × 10 −17 /10 3 s. Similarly, the power spectral density of phase noise was analyzed in the frequency domain. These experimental results demonstrate that the compensation scheme improved the performance by two to three orders of magnitude. Thus, the proposed frequency transmission technique has potential application for disseminating ultrastable frequency references in the optical fiber network.