首页|Temperature-insensitive and high-precision frequency transfer based on fabricated in-house i.05 km hollow-core anti-resonant fiber
Temperature-insensitive and high-precision frequency transfer based on fabricated in-house i.05 km hollow-core anti-resonant fiber
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We have prepared kilometer-scale low-loss hollow-core nested anti-resonant nodeless fibers by improving their structural design,which reduces the difficulty of fabricating low-loss hollow-core fibers over long distances.The lowest loss is 2.7 dB/km at 1506 nm,and this loss is less than 5 dB/km at 1417-1620 nm.High-precision frequency transfer is achieved using the fabricated 1050 m hollow-core fiber by locking the repetition frequency of the optical frequency comb to a rubid-ium atomic clock.The frequency stability is 1.67 × 10-12/s and 5.66 × 10-14/1000 s when the temperature is changed,and no phase compensation device is used.It is an order of magnitude lower compared to that of the conventional single-mode fiber.
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