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Yun Chung

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Papers by Yun Chung

Research paper thumbnail of Effect of polarization-dependent loss on optical signal-to-noise ratio monitoring technique based on polarization-nulling method

Optics Express, 2006

We analyzed the probability of errors in the measured optical signal-to-noise ratio (OSNR) by usi... more We analyzed the probability of errors in the measured optical signal-to-noise ratio (OSNR) by using the polarization-nulling method, when the amplified spontaneous emission noise (ASE) is partially polarized due to the polarization-dependent loss (PDL) in the transmission link.

Research paper thumbnail of Quantum Limited Atomic Resonance Optical Filter

Research paper thumbnail of Next-generation WDM PON technologies

Asia Communications and Photonics Conference and Exhibition, Dec 1, 2010

We report our recent progresses toward the next-generation wavelength-division-multiplexed passiv... more We report our recent progresses toward the next-generation wavelength-division-multiplexed passive optical network (WDM PON) including the high-speed (>;10 Gbps) and long-reach (>;100 km) operations.

Research paper thumbnail of Performance monitoring techniques for WDM networks

This paper reviews the current status of various optical monitoring techniques for WDM networks w... more This paper reviews the current status of various optical monitoring techniques for WDM networks with an emphasis on the OSNR monitoring technique. The results show that the polarization-nulling technique could be used in modern dynamic WDM networks and enhance their operation and maintenance.

Research paper thumbnail of A novel sliding-frequency guiding filter for soliton transmission

IEEE Photonics Technology Letters, Sep 1, 1996

Research paper thumbnail of Temperature-tuned ZnS etalon filters for WDM systems

IEEE Photonics Technology Letters, Jun 1, 1992

Research paper thumbnail of 1.7 Gbit/s transmission over 165 km of dispersion-shifted fibre using spectrum-sliced fibre amplifier light source

Electronics Letters, Aug 18, 1994

Research paper thumbnail of Optical Networking II

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

Research paper thumbnail of Phasor and OSNR monitor for DPSK/DQPSK signals based on single delay-interferometer using a 3x3 optical coupler (invited paper)

Research paper thumbnail of Dispersion managed fiber optic cable

Research paper thumbnail of High-speed fiberoptic transmission expreiment system (invited)

Research paper thumbnail of Recent progress on WDM PON technologies (Invited)

Optical Network Design and Modelling, 2010

Research paper thumbnail of Impact of using multi-level modulation format in multi-core fiber

We evaluate the impact of using high-order formats on the capacity of multi-core fiber. The resul... more We evaluate the impact of using high-order formats on the capacity of multi-core fiber. The results show that the use of higher-order format can reduce the achievable capacity per area due to its lower crosstalk tolerance.

Research paper thumbnail of Digital non-coherent receivers for advanced modulation formats (invited paper)

We discuss the digital signal-processing techniques for phase-adjustment-free operation of a non-... more We discuss the digital signal-processing techniques for phase-adjustment-free operation of a non-coherent receiver with the enhanced receiver sensitivity. The detection of multi-level DPSK and 16ADPSK signals is demonstrated with near quantum-limited sensitivity.

Research paper thumbnail of 320 Gb/s (32 x 10 Gb/s) WDM transmission with 50 GHz channel spacing over 430 km of densely dispersion-managed fiber

Research paper thumbnail of A simple OSNR monitoring technique based on RF spectrum analysis for PDM-QPSK signals

We demonstrate a simple technique to monitor the inband OSNR of the QPSK signal by analyzing the ... more We demonstrate a simple technique to monitor the inband OSNR of the QPSK signal by analyzing the RF spectrum of the receiver noises. This technique is also applicable to the PDM-QPSK signals.

Research paper thumbnail of Transmission of 28-Gb/s duobinary signals over 45-km SSMF Using 1.55-µm directly modulated laser

We demonstrate the transmission of 28-Gb/s 3-level electrical duobinary signals generated by a di... more We demonstrate the transmission of 28-Gb/s 3-level electrical duobinary signals generated by a directly modulated laser over 45-km SSMF. The duobinary signals driving the laser are obtained by either a low-pass filter or delay-and-add circuit.

Research paper thumbnail of Electronic phase equalization technique for 10-Gb/s RSOA-based coherent WDM PON

ABSTRACT We develop an electronic phase equalization technique for the phase-modulated signal gen... more ABSTRACT We develop an electronic phase equalization technique for the phase-modulated signal generated by using the bandwidth-limited RSOA. The effectiveness of this technique is demonstrated in the 10-Gb/s, 80-km-reach WDM PON implemented by using directly-modulated TO-can packaged RSOAs and digital coherent receivers.

Research paper thumbnail of Optical performance monitor based on polarization-nulling technique (Invited Paper)

Research paper thumbnail of Effect of polarization-dependent loss on optical signal-to-noise ratio monitoring technique based on polarization-nulling method

Optics Express, 2006

We analyzed the probability of errors in the measured optical signal-to-noise ratio (OSNR) by usi... more We analyzed the probability of errors in the measured optical signal-to-noise ratio (OSNR) by using the polarization-nulling method, when the amplified spontaneous emission noise (ASE) is partially polarized due to the polarization-dependent loss (PDL) in the transmission link.

Research paper thumbnail of Quantum Limited Atomic Resonance Optical Filter

Research paper thumbnail of Next-generation WDM PON technologies

Asia Communications and Photonics Conference and Exhibition, Dec 1, 2010

We report our recent progresses toward the next-generation wavelength-division-multiplexed passiv... more We report our recent progresses toward the next-generation wavelength-division-multiplexed passive optical network (WDM PON) including the high-speed (>;10 Gbps) and long-reach (>;100 km) operations.

Research paper thumbnail of Performance monitoring techniques for WDM networks

This paper reviews the current status of various optical monitoring techniques for WDM networks w... more This paper reviews the current status of various optical monitoring techniques for WDM networks with an emphasis on the OSNR monitoring technique. The results show that the polarization-nulling technique could be used in modern dynamic WDM networks and enhance their operation and maintenance.

Research paper thumbnail of A novel sliding-frequency guiding filter for soliton transmission

IEEE Photonics Technology Letters, Sep 1, 1996

Research paper thumbnail of Temperature-tuned ZnS etalon filters for WDM systems

IEEE Photonics Technology Letters, Jun 1, 1992

Research paper thumbnail of 1.7 Gbit/s transmission over 165 km of dispersion-shifted fibre using spectrum-sliced fibre amplifier light source

Electronics Letters, Aug 18, 1994

Research paper thumbnail of Optical Networking II

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

Research paper thumbnail of Phasor and OSNR monitor for DPSK/DQPSK signals based on single delay-interferometer using a 3x3 optical coupler (invited paper)

Research paper thumbnail of Dispersion managed fiber optic cable

Research paper thumbnail of High-speed fiberoptic transmission expreiment system (invited)

Research paper thumbnail of Recent progress on WDM PON technologies (Invited)

Optical Network Design and Modelling, 2010

Research paper thumbnail of Impact of using multi-level modulation format in multi-core fiber

We evaluate the impact of using high-order formats on the capacity of multi-core fiber. The resul... more We evaluate the impact of using high-order formats on the capacity of multi-core fiber. The results show that the use of higher-order format can reduce the achievable capacity per area due to its lower crosstalk tolerance.

Research paper thumbnail of Digital non-coherent receivers for advanced modulation formats (invited paper)

We discuss the digital signal-processing techniques for phase-adjustment-free operation of a non-... more We discuss the digital signal-processing techniques for phase-adjustment-free operation of a non-coherent receiver with the enhanced receiver sensitivity. The detection of multi-level DPSK and 16ADPSK signals is demonstrated with near quantum-limited sensitivity.

Research paper thumbnail of 320 Gb/s (32 x 10 Gb/s) WDM transmission with 50 GHz channel spacing over 430 km of densely dispersion-managed fiber

Research paper thumbnail of A simple OSNR monitoring technique based on RF spectrum analysis for PDM-QPSK signals

We demonstrate a simple technique to monitor the inband OSNR of the QPSK signal by analyzing the ... more We demonstrate a simple technique to monitor the inband OSNR of the QPSK signal by analyzing the RF spectrum of the receiver noises. This technique is also applicable to the PDM-QPSK signals.

Research paper thumbnail of Transmission of 28-Gb/s duobinary signals over 45-km SSMF Using 1.55-µm directly modulated laser

We demonstrate the transmission of 28-Gb/s 3-level electrical duobinary signals generated by a di... more We demonstrate the transmission of 28-Gb/s 3-level electrical duobinary signals generated by a directly modulated laser over 45-km SSMF. The duobinary signals driving the laser are obtained by either a low-pass filter or delay-and-add circuit.

Research paper thumbnail of Electronic phase equalization technique for 10-Gb/s RSOA-based coherent WDM PON

ABSTRACT We develop an electronic phase equalization technique for the phase-modulated signal gen... more ABSTRACT We develop an electronic phase equalization technique for the phase-modulated signal generated by using the bandwidth-limited RSOA. The effectiveness of this technique is demonstrated in the 10-Gb/s, 80-km-reach WDM PON implemented by using directly-modulated TO-can packaged RSOAs and digital coherent receivers.

Research paper thumbnail of Optical performance monitor based on polarization-nulling technique (Invited Paper)

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