J. D. O’Brien, W. Kuang, P. –T. Lee, J. R. Cao, W. Kim, C. Kim, “Photonic Crystal Lasers,” in Encyclopedia of Nanoscience and Nanotechnology edited by H. S. Nalwa, American Scientific Publishers, California, USA (2004)

Wan Kuang, Cheolwoo Kim, A. Stapleton, Woo Jun Kim, J. D. O'Brien, "Calculated out-of-plane transmission loss for photonic-crystal slab waveguides", Optics Letters 28(19), 1781-3 (2003)

J. D. O’Brien, P.-T. Lee, J. R. Cao, W. Kuang, C. Kim, W.-J. Kim, T. Yang, S.-J. Choi, P. D. Dapkus, “Photonic Crystal Lasers,” in Proceedings of SPIE Vol.4942 VCSELs and Optical Interconnects, edited by Hugo Thienpont, Jan Danckaert, (SPIE, Bellingham, WA, 2003) pp.194, (invited)

W. Kuang, C. Kim, A. Stapleton, J. D. O'Brien, "Grating-assisted coupling of optical fibers and photonic crystal waveguides." Optics Letters, Vol 27, No. 18, 15 September 2002, p. 1604.

C. W. Kim, W. J. Kim, A. Stapleton, J. R. Cao, J. D. O’Brien, and P. D. Dapkus, “Quality factors in single-defect photonic-crystal lasers with asymmetric cladding layers”, Journal of Optical Society of America B 19, 1777, (2002)

J. D. O'Brien, J. Cao, W. Kuang, M. H. Shih, W. J. Kim, H. Yukawa, C. Kim, S. Choi, P. D. Dapkus, “Photonic crystal waveguides and emitters,” SPIE Photonic Design, Technology, and Packaging Conference (2003), Perth, Australia, Proceedings of SPIE Vol. #5277 (Invited)

J. D. O'Brien, J. R. Cao, P.-T. Lee, T. Yang, C. Kim, W. J. Kim, S.-J. Choi, and P. D. Dapkus, “Photonic crystal lasers”, SPIE’s Photonics Fabrication Europe (2002), Proceedings of SPIE, vol. 4942 (invited).

Wan Kuang, Cheolwoo Kim, A. Stapleton, John D. O'Brien, "Grating-assisted coupling of optical fibers and photonic crystal waveguides", CMC3, CLEO/IQEC conference in Long Beach, California (2002)

Cheolwoo Kim, John D. O'Brien "Maximization of transmission at branches in photonic crystal waveguides", ThK6, Optical Fiber Communication Conference and Exhibit (OFC), Anaheim, California, (2002)

C. Kim,  W. J. Kim, A. Stapleton,  J. R. Cao, J. O’Brien, “Quality Factors in Single Defect Photonic Crystal Lasers with Asymmetric Cladding Layers” ,  Lasers and Electro-Optics Society, 2001. LEOS 2001. The 14th Annual Meeting of the IEEE , Volume: 2 , pp. 210-211 (2001).