[1] [1] Lin H, Deng J, Lin J, et al. Frequency stability of a pulsed optically pumped atomic clock with narrow Ramsey linewidth［J］. Applied Optics,2018,57(12):3056—3060.

[2] [2] Yang C, Huang Z, Deng H, et al. Ultra-compact all-fiber narrow-linewidth single-frequency blue laser at 489nm［J］. Journal of Optics,2017,20(2):025803.

[3] [3] Gao Y S. Time and wavelength-division multiplex distributed sensing interrogation system based on distributed feedback laser array and ultraweak fiber Bragg grating［J］. Optical Engineering,2017,56(11):117104.1—117104.8.

[5] [5] Guan H, Novack A, Galfsky T, et al. Widely-tunable, narrow-linewidth Ⅲ-Ⅴ/silicon hybrid external-cavity laser for coherent communication［J］. Optics Express,2018,26(7):7920.

[6] [6] Zhou K, Zhao Q, Huang X, et al. kHz-order linewidth controllable 1550nm single-frequency fiber laser for coherent optical communication［J］. Optics Express,2017,25(17):19752.

[9] [9] Stern B, Ji X, Dutt A, et al. Compact narrow-linewidth integrated laser based on a low-loss silicon nitride ring resonator［J］. Optics Letters,2017,42(21):4541—4544.

[10] [10] Mo C, Zhou M, Zhang Y, et al. Ultranarrow-linewidth brillouin/erbium fiber laser based on 45cm erbium-doped fiber［J］. IEEE Photonics Journal,2017,7(1):1—6.

[12] [12] AQ6150 series optical wavelength meters-yokogawa motor (China) Co., Ltd. ［J］. Sensor World,2013(1):47—47.

[13] [13] Zhi Y, Feng L S, Lei M. Delay self-heterodyne measurement of narrow linewidth laser frequency drift characteristic［J］. Optik- International Journal for Light and Electron Optics,2014,125(13):3124—3126.