[1] M. P. Fok, W. W. Tang, C. Shu. Higher order repetition rate multiplication for multi-wavelength pulsed source. IEEE Photon. Technol. Lett., 18, 466-468(2006).

[2] C. K. Chan, L.-K. Chen. Theoretical analysis of high-repetition rate optical pulse multiplication using fiber-coupler loop configuration. IEEE Photon. Technol. Lett., 7, 1145-1147(1995).

[3] K. Yiannopoulos, K. Vyrsokinos, E. Kehayas, N. Pleros, K. Vlachos, H. Avramopoulos, G. Guekos. Rate multiplication by double-passing Fabry–Perot filtering. IEEE Photon. Technol. Lett., 15, 1294-1296(2003).

[4] D. S. Seo, D. E. Leaird, A. M. Weiner, S. Kamei, M. Ishii, A. Sugita, K. Okamoto. Continuous 500  GHz pulse train generation by repetition-rate multiplication using arrayed waveguide grating. Electron. Lett., 39, 1138-1140(2003).

[5] B. Xia, L. R. Chen. A direct temporal domain approach for pulse-repetition rate multiplication with arbitrary envelope shaping. IEEE J. Sel. Top. Quantum Electron., 11, 165-172(2005).

[6] J. Azana, M. A. Muriel. Temporal self-imaging effects: theory and application for multiplying pulse repetition rates. IEEE J. Sel. Top. Quantum Electron., 7, 728-744(2001).

[7] S. Wang, B. Ciftcioglu, H. Wu. Microring-based optical pulse-train generator. Opt. Express, 18, 19314-19323(2010).

[8] L. Xu, C. Li, H. K. Tsang, C. W. Chow. Optical frequency doubling for multichannel radio-over-fiber system based on integrated phase modulator and silicon coupled microring notch filter. Electron. Lett., 45, 697-698(2009).

[9] L. Xu, C. Li, C. W. Chow, H. K. Tsang. Optical mm-wave signal generation by frequency quadrupling using an optical modulator and silicon microresonator filter. IEEE Photon. Technol. Lett., 21, 1211-1213(2009).

[10] B. Xia, L. R. Chen. Ring resonator arrays for pulse repetition rate multiplication and shaping. IEEE Photon. Technol. Lett., 18, 1999-2001(2006).

[11] B. Xia, L. R. Chen. Arbitrary optical waveform generation using 2D ring resonator arrays. Opt. Express, 14, 6619-6627(2006).

[12] M. Pu, H. Ji, L. H. Frandsen, M. Galili, L. K. Oxenlowe, J. M. Hvam. High-Q microring resonator with narrow free spectral range for pulse repetition rate multiplication. Conference on Lasers and Electro-Optics, CThBB7(2009).

[13] M. Xiong, O. Ozolins, Y. Ding, B. Huang, Y. An, H. Ou, C. Peucheret, X. Zhang. Simultaneous RZ-OOK to NRZ-OOK and RZ DPSK to NRZ-DPSK format conversion in silicon microring resonator. Opt. Express, 20, 27263-27272(2012).

[14] D. Xiaowei, P. Li, J. Shuisheng. Characteristic analyses of series-coupled multiple-ring resonator filter. Acta Opt. Sin., 26, 207-211(2006).

[15] O. Schwelb. Transmission, group delay, and dispersion in single-ring optical resonators and add-drop filters—a tutorial overview. J. Lightwave Technol., 22, 1380-1394(2004).

[16] M. A. Preciado, M. A. Muriel. All-pass optical structures for repetition rate multiplication. Opt. Express, 16, 11162-11168(2008).