Prof. Yun C. Chung Profile

Prof. Yun C. Chung

Professor at KAIST

SPIE Involvement:

Author

Publications (27)

Proceedings Article | 11 November 2008 Paper

High reflection tolerance of 1.25-Gb/s RSOA-based WDM PON employing spectrum-sliced ASE source

H. C. Jeon, K. Y. Cho, Y. Takushima, Y. C. Chung

Proceedings Volume 7136, 71360N (2008) https://doi.org/10.1117/12.803892

KEYWORDS: Superluminescent sources, Reflectivity, Tolerancing, Wavelength division multiplexing, Receivers, Light, Polarization, Radon, Laser resonators, Optical filters

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Proceedings Article | 11 November 2008 Paper

Monitoring techniques for phase and OSNR of DPSK/DQPSK signals

Y. Takushima, H. Y. Choi, Y. C. Chung

Proceedings Volume 7136, 71360U (2008) https://doi.org/10.1117/12.803097

KEYWORDS: Modulators, Phase shift keying, Signal detection, Polarization, Modulation, Signal to noise ratio, Interference (communication), Receivers, Picosecond phenomena, Phase measurement

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SPIE Journal Paper | 1 March 2008

Optimization of polarization-scrambling frequency in lightwave systems

Paul Park, JunHaeng Lee, Yun-Chur Chung

OE, Vol. 47, Issue 03, 035005, (March 2008) https://doi.org/10.1117/12.10.1117/1.2896415

KEYWORDS: Polarization, Modulation, Receivers, Picosecond phenomena, Clocks, Optical engineering, Optical amplifiers, Fiber optics, Eye, Wavelength division multiplexing

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SPIE Journal Paper | 1 February 2008

Performance analysis of low-frequency pilot-tone-based monitoring techniques in amplified wavelength-division-multiplexed networks

Paul Park, C. H. Kim, Yun-Chur Chung

OE, Vol. 47, Issue 02, 025009, (February 2008) https://doi.org/10.1117/12.10.1117/1.2844758

KEYWORDS: Optical amplifiers, Modulation, Wavelength division multiplexing, Wavelength division multiplexing networks, Channel projecting optics, Optical engineering, Fiber amplifiers, Optical networks, Single mode fibers, Optical testing

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Proceedings Article | 19 November 2007 Paper

Ultra-high speed MMF transmission using mode-field matched center launching technique

D. Shim, Y. Takushima, Y. Chung

Proceedings Volume 6783, 678322 (2007) https://doi.org/10.1117/12.741758

KEYWORDS: Multimode fibers, Single mode fibers, Multiphoton fluorescence microscopy, Connectors, Wavelength division multiplexing, Transmitters, Digital micromirror devices, Receivers, Local area networks, Electrical engineering

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Proceedings Article | 19 November 2007 Paper

Enhanced reflection tolerance of upstream signal in a RSOA-based WDM PON by using Manchester coding

A. Murakami, Y. Lee, K. Cho, Y. Takushima, A. Agata, K. Tanaka, Y. Horiuchi, Y. Chung

Proceedings Volume 6783, 67832I (2007) https://doi.org/10.1117/12.745769

KEYWORDS: Tolerancing, Wavelength division multiplexing, Signal attenuation, Modulation, Light sources, Receivers, Fabry–Perot interferometers, Signal generators, Passive optical networks, Mirrors

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Proceedings Article | 19 October 2006 Paper

Design method for bidirectionally pumped distributed Raman amplifier

D. Sim, E. Son, J. Lee, S. Jun, Y Chung

Proceedings Volume 6353, 635320 (2006) https://doi.org/10.1117/12.689038

KEYWORDS: Raman spectroscopy, Optical amplifiers, Signal attenuation, Fiber amplifiers, Wave propagation, Amplifiers, Genetic algorithms, Single mode fibers, Electrical engineering, Wavelength division multiplexing

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Proceedings Article | 19 October 2006 Paper

Effects of downstream modulation formats on the performance of RSOA-based WDM PON

S. Kim, E. Son, S. Jun, J. Lee, D. Lee, E Sim, Y. Chung

Proceedings Volume 6353, 63531Q (2006) https://doi.org/10.1117/12.691156

KEYWORDS: Modulation, Wavelength division multiplexing, Receivers, Single mode fibers, Reflectivity, Semiconductor optical amplifiers, Light sources, Radon, Signal detection, Signal attenuation

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Proceedings Article | 19 October 2006 Paper

Performance of the OSNR monitoring technique based on improved polarization-nulling method

H. Choi, J. Lee, S. Jun, S. Shin, Y. Chung

Proceedings Volume 6353, 63530F (2006) https://doi.org/10.1117/12.688739

KEYWORDS: Interference (communication), Nonlinear optics, Birefringence, Single mode fibers, Bandpass filters, Wavelength division multiplexing, Signal to noise ratio, Channel projecting optics, Optical filters, Optical testing

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Proceedings Article | 3 October 2006 Paper

A novel four-wave mixing compensator

J. Huh, S. Jun, J. Lee, Y. Chung

Proceedings Volume 6353, 63532G (2006) https://doi.org/10.1117/12.689430

KEYWORDS: Four wave mixing, Wavelength division multiplexing, Fiber lasers, Optical proximity correction, Signal processing, Optical testing, Polarization, Optical amplifiers, Modulators, Phase modulation

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Proceedings Article | 28 January 2006 Paper

Fault localization in WDM PON by reusing downstream light sources

K. Lim, E. Son, K. Han, Y. Chung

Proceedings Volume 6025, 60251B (2006) https://doi.org/10.1117/12.667058

KEYWORDS: Wavelength division multiplexing, Light sources, Signal attenuation, Radon, Receivers, Light emitting diodes, Bragg cells, Tunable lasers, Signal detection, Reflectometry

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Proceedings Article | 9 December 2005 Paper

Recent progress in WDM passive optical networks

Y. Chung

Proceedings Volume 6021, 60212W (2005) https://doi.org/10.1117/12.636116

KEYWORDS: Wavelength division multiplexing, Optical fibers, Light sources, Fiber to the x, Radon, Passive optical networks, Network architectures, Light emitting diodes, Video, Time division multiplexing

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Proceedings Article | 9 September 2002 Paper

Current status of WDM monitoring techniques

Yun Chur Chung

Proceedings Volume 4910, (2002) https://doi.org/10.1117/12.482423

KEYWORDS: Wavelength division multiplexing, Channel projecting optics, Dense wavelength division multiplexing, Signal to noise ratio, Wavelength division multiplexing networks, Tunable filters, Fabry–Perot interferometers, Optical amplifiers, Optical networks, Efficient operations

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Proceedings Article | 28 August 2002 Paper

Reduction of polarization mode dispersion impairments using an automatic tracking of decision threshold in receiver

Young-Jei Oh, Chul-Han Kim, Jun Hee Lee, Hwan-Seok Chung, Eui Son, Yun Chur Chung

Proceedings Volume 4904, (2002) https://doi.org/10.1117/12.481210

KEYWORDS: Picosecond phenomena, Receivers, Polarization, Modulators, Automatic tracking, Modulation, Forward error correction, Eye, Optical filters, Feedback loops

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Proceedings Article | 23 August 2002 Paper

Effect of polarization-dependent loss on polarization-shift-keying transmission system

Ho-Chul Ji, Jun Hee Lee, Yun Chur Chung

Proceedings Volume 4906, (2002) https://doi.org/10.1117/12.480592

KEYWORDS: Polarization, Modulators, Signal attenuation, Fiber optics, Receivers, Modulation, Fiber optic components, Fiber amplifiers, Optical amplifiers, Binary data

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Proceedings Article | 23 August 2002 Paper

Transmission of 40-Gb/s x 8-WDM channels with 0.4-(bits/s)/Hz spectral efficiency using short-period dispersion-managed fiber

Hwan-Seok Chung, Dae-Won Kim, Yun Chur Chung

Proceedings Volume 4906, (2002) https://doi.org/10.1117/12.480583

KEYWORDS: Wavelength division multiplexing, Single mode fibers, Optical amplifiers, Optical fibers, Dispersion, Multiplexing, Channel projecting optics, Demultiplexers, Modulators, Picosecond phenomena

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Proceedings Article | 23 August 2002 Paper

Pump-to-signal crosstalk in Raman amplifier systems using polarization-multiplexed pump lasers

Eui Son, Yun Chur Chung

Proceedings Volume 4906, (2002) https://doi.org/10.1117/12.480590

KEYWORDS: Raman spectroscopy, Modulation, Optical amplifiers, Amplifiers, Fiber amplifiers, Polarization, Single mode fibers, Signal attenuation, Receivers, Phase shift keying

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Proceedings Article | 17 October 2001 Paper

OSNR monitoring technique based on high-frequency receiver noise

Chun Youn, Seung-Kyun Shin, Keun-Joo Park, Yun Chur Chung

Proceedings Volume 4584, (2001) https://doi.org/10.1117/12.445160

KEYWORDS: Receivers, Interference (communication), Wavelength division multiplexing, Single mode fibers, Modulation, Spectrum analysis, Signal to noise ratio, Optical amplifiers, Channel projecting optics, Attenuators

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Proceedings Article | 17 October 2001 Paper

PMD emulation with statistical characteristics

Jun Haeng Lee, Yun Chur Chung

Proceedings Volume 4581, (2001) https://doi.org/10.1117/12.445048

KEYWORDS: Polarization, Convolution, Picosecond phenomena, Beam splitters, Electrical engineering, Linear filtering, Transmittance, Tolerancing, Crystals, Light sources

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Proceedings Article | 17 October 2001 Paper

XPM crosstalk in conventional single-mode fiber network upgraded with dispersion compensating fiber

Jian Chen, Hoon Kim, Yun Chur Chung

Proceedings Volume 4581, (2001) https://doi.org/10.1117/12.445054

KEYWORDS: Modulation, Single mode fibers, Optical amplifiers, Scanning probe microscopy, Dubnium, Optical networks, Electrical engineering, Signal to noise ratio, Phase shift keying, Wavelength division multiplexing

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Proceedings Article | 17 October 2001 Paper

Optical path and crosstalk monitoring technique using pilot tones in all-optical WDM transport network

Ho-Chul Ji, Keun-Joo Park, Jongkwon Kim, Yun Chur Chung

Proceedings Volume 4584, (2001) https://doi.org/10.1117/12.445149

KEYWORDS: Wavelength division multiplexing, Switches, Optical switching, Optical amplifiers, Modulation, Channel projecting optics, Switching, Optical networks, Single mode fibers, Multiplexers

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Proceedings Article | 16 October 2001 Paper

Active multipurpose fiber optic access network

Kwan Hee Han, Hoon Kim, Yun Chur Chung

Proceedings Volume 4583, (2001) https://doi.org/10.1117/12.445140

KEYWORDS: Radon, Wavelength division multiplexing, Fiber optic networks, Fiber optics, Optical amplifiers, Optical networks, Interference (communication), Multiplexing, Single mode fibers, Signal attenuation

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Proceedings Article | 12 November 1999 Paper

Novel method for stabilization in harmonically mode-locked erbium-doped fiber laser with external optical modulation by laser diode

Van Hoi Pham, Duc Vu, Quoc Tran, Chun-Ju Yuon, Yun Chur Chung

Proceedings Volume 3896, (1999) https://doi.org/10.1117/12.370362

KEYWORDS: Fiber lasers, Semiconductor lasers, Mode locking, Modulation, Modulators, Laser stabilization, Erbium, Picosecond phenomena, Erbium lasers, Semiconductors

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Proceedings Article | 19 June 1998 Paper

Passive optical network for CDMA personal communication system

Hoon Kim, Jong Cheong, Chang-Hee Lee, Yun Chur Chung

Proceedings Volume 3420, (1998) https://doi.org/10.1117/12.312871

KEYWORDS: Light emitting diodes, Fiber optic networks, Fiber optics, Telecommunications, Networks, Fiber optic communications, Fabry–Perot interferometers, Rubidium, Stars, Network architectures

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Proceedings Article | 26 April 1995 Paper

Standardization of optical frequencies for wavelength-division-multiplexing (WDM) networking applications

Yun Chur Chung, Lee Clark, C. Fan

Proceedings Volume 2378, (1995) https://doi.org/10.1117/12.208236

KEYWORDS: Krypton, Wavelength division multiplexing, Molecules, Optical amplifiers, Standards development, Doppler effect, Absorption, Fabry–Perot interferometers, Transmitters, Argon

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Proceedings Article | 30 April 1993 Paper

Frequency-locked long-wavelength lasers for lightwave communication systems

Yun Chur Chung

Proceedings Volume 1837, (1993) https://doi.org/10.1117/12.143672

KEYWORDS: Lamps, Krypton, Telecommunications, Laser packaging, Fiber coupled lasers, Fiber couplers, Signal attenuation, Argon, Noble gases, Ionization

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