H.Y. Choi

Measurement of Differential Phasor Diagram of Multilevel DPSK Signals by Using an Adjustment-Free Delay Interferometer Composed of a 3$\,\times\,$3 Optical Coupler

Y. Takushima, Y.C. Chung, H.Y. Choi, 2009, Journal of Lightwave Technology.

Chromatic Dispersion Monitoring Technique Using Pilot Tone Carried by Broadband Light Source

Y.C. Chung, H.Y. Choi, P.K.J. Park, 2009, IEEE Photonics Technology Letters.

Multiple-impairment monitoring technique using optical field detection and asynchronous delay-tap sampling method

Y. Takushima, Y.C. Chung, H.Y. Choi, 2009, 2009 Conference on Optical Fiber Communication - incudes post deadline papers.

OSNR Monitoring Technique for DPSK/DQPSK Signals Based on Self-Heterodyne Detection

Y. Takushima, H.Y. Choi, Y.C. Chung, 2008, IEEE Photonics Technology Letters.

Bidirectional WDM PON using light-emitting diodes spectrum-sliced with cyclic arrayed-waveguide grating

K.W. Lim, E.S. Son, H.Y. Choi, 2004, IEEE Photonics Technology Letters.

Bi-directional WDM passive optical network using spectrum-sliced light-emitting diodes

K.W. Lim, E.S. Son, H.Y. Choi, 2004, Optical Fiber Communication Conference, 2004. OFC 2004.

Effects of Reflection in RSOA-Based WDM PON Utilizing Remodulation Technique

Y. Takushima, K. Y. Cho, A. Agata, 2009, Journal of Lightwave Technology.

Improved polarization-nulling technique for monitoring OSNR in WDM network

H.Y. Choi, J.H. Lee, S.K. Ji, 2006, 2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference.