Patents awarded:

  1. S. Tao, Y. Wu, R. Hui and X. Ma, “Optical isolators using In-doped, Bi-substituted garnet as the Faraday rotator,” Chinese patent 882078143, issued on July 5, 1989.
  2. G. Li, T. Makino, R. Hui, “Optical Q switching to generate ultra-short optical pulse in diode lasers,” US patent 5455836, issued on October 3, 1995.
  3. M. O’Sullivan, R. Hui and J. Zhou, “Eye distortion mask technique for optical transmission systems,” US patent #5774242, issued in June 1998.
  4. Garthe D, R. Saunders, R. Robinson, M. O’Sullivan and R. Hui “Transmission systems with cross-phase modulation compensation,” European Patent  # 98306290.2-2211, issued in November 1998. US Patent # US6124960, issued, Sept.26, 2000.
  5. J. Hong, R. Hui, M. O’Sullivan, “Generation of short optical pulse using strongly complex coupled DFB lasers,” US patent  # US6069906, issued May 30, 2000
  6. R. Hui, Jin Hong and M. O’Sullivan, “Method and devices for encoding data into high speed optical pulse train,”  US patent 6438148, issued August 20, 2002
  7. H.Y. Pua, C. Allen, K. Demarest, R. Hui, K. Peddanarappagari, “Method and apparatus to compensate for polarization mode dispersion,” US Patent 6,459,830, issued October 1, 2002
  8. R. Hui and M. O’Sullivan, “Method and apparatus for high resolution monitoring of optical signals” US Patent 6,493,088, issued on December 10, 2002
  9. K. Demarest, C. Johnson, C. Allen, R. Hui and B. Zhu, “Method and apparatus for recovering an optical clock signal,” US patent # 6542274, issued on April 1, 2003
  10. R. Hui and M. O’Sullivan, “Method and apparatus for high resolution monitoring of optical signals” US Patent 6,687,009, issued on February 3, 2004
  11. R. Hui, "Optical domain signal analyzer," US patent # 6697195, issued on February 24, 2004
  12. R. Hui, C. Allen, and K. Demarest, "Optical systems with diversity detection," U.S. Patent # 6,999,688, issued on February 14, 2006.
  13. R. Hui, J. Lin and H. Jiang, “Method and apparatus for use of III-Nitride wide bandgap semiconductors in optical communications,” US patent #7345812, Issued on March 18, 2008.
  14. R. Hui and C. Johnson,Laser system for photonic excitation investigation,” US patent 7,525,724, issued on April 28, 2009
  15. R. Hui, C. Allen and P. Adany, Coherent detection scheme for FM chirped laser radarUS patent 7,742,152, issued on June 22, 2010
  16. J. Jiang, R. Hui, D. Richards, and S. Oliva, “ Measurement of Polarization dependent loss in an optical transmission system” US patent 8059958 B1, issued on November 15, 2011
  17. R. Hui, and A. Fumagalli, " Digital subcarrier optical network utilizing digital subcarrier cross-connects with increased energy efficiency," US Patent 8897640, issued November 25, 2014
  18. R. Hui and A. Fumagalli, " Digital subcarrier cross-connect switching," US patent 9,031,406, issued May 12, 2015
  19. C. Allen, T. Shuey, and R. Hui, "Low-altitude altimeter and method" US patent 9,008,869, issued on April 14, 2015