[1] Shuichi Suzuki, Yasuo Kokubun, Masataka Nakazawa et al.. Ultrashort optical pulse transmission characteristics of vertically coupled microring resonator add/drop filter[J]. J. Lightwave Technol., 2001, 19(2)： 266～271
[2] Tymon Barwicz, Milo A. Popovi, Michael R. Watts et al.. Fabrication of add-drop filters based on frequency-matched microring resonators[J]. J. Lightwave Technol., 2006, 24(5)： 2207～2218
[3] Payam Rabiei, William H. Steier, Cheng Zhang et al.. Polymer micro-ring filters and modulators[J]. J. Lightwave Technol., 2002, 20(11)： 1968～1975
[4] P. P. Absil, J. V. Hryniewicz, B. E. Little et al.. Compact microring notch filters[J]. IEEE Photon. Technol. Lett., 2000, 12(4): 398～400
[5] Yutaka Hatakeyama, Takamitssu Hanai, Shuichi Suzuki et al.. Loss-less multilevel crossing of busline waveguide in vertically coupled microring resonator filter[J]. IEEE Photon. Technol. Lett., 2004, 16(2): 473～475
[6] Amnon Yariv. Critical coupling and its control in optical waveguidering resonator systems[J]. IEEE Photon. Technol. Lett., 2000, 14(4): 483～485
[7] Tarek A. Ibrahim, W. Cao, Y. Kim et al.. All-optical switching in a laterally coupled microring resonator by carrier injection[J]. IEEE Photon. Technol. Lett., 2003, 15(1): 36～38
[10] Joyce K. S. Poon, Jocob Scheuer, Amnon Yariv. Wavelength-selective reflector based on a circular array of coupled microring resonators[J]. IEEE Photon. Technol. Lett., 2004, 16(5): 1331～1333
[11] Youngchul Chung, Doo-Gun Kim, Nadir Dagli. Reflection properties of coupled-ring reflectors[J]. J. Lightwave Technol., 2006, 24(4)： 1865～1874
[12] Otto Schwelb. Transmission, group delay and dispersion in single-ring optical resonators and add/drop filters-A tutorial overview[J]. J. Lightwave Technol., 2004, 22(5)： 1380～1394
[13] George T. Paloczi, Jocob Scheuer, Amnon Yariv. Compact microring-based wavelength-selective inline optical reflector[J]. IEEE Photon. Technol. Lett., 2005, 17(2): 390～392
