Geun-Young Kim

A PON system suitable for internetworking optical network units using a fiber Bragg grating on the feeder fiber

We propose a simple method for interconnecting a group of optical network units (ONUs) dispersed throughout the customer premises, yet retaining the features of the conventional passive optical network (PON) system. A fiber Bragg grating on the feeder fiber near the star coupler reflects the light from an ONU and broadcasts it to all ONUs through the coupler. We experimentally demonstrated its feasibility using two wavelengths: one for the conventional PON and the other for internetworking ONUs.

Wavelength Division Multiplexing-Passive Optical Network Based FTTH Field Trial Test

In this paper, we have presented the results of Wavelength Division Multiplexing-Passive Optical Network (WDM-PON) based fiber-to-the-home (FTTH) field trial test which was held in the city of Gwangju. We have implemented an injection locked Fabry-Perot Laser Diode (FP-LD) based WDM-PON system and reliably delivered Internet Protocol TV (IP-TV), networked Personal Video Recorder (N-PVR), High-Definition Video on Demand (HD-VoD), Education on Demand (EoD) and Internet service as FTTH service through the system during the field trial test. We have also verified that the WDM-PON system worked well to provide quality of service (QoS) guaranteed 100Mbps bandwidth per subscriber. Furthermore, we have presented network designing issues in Outside Plant (OSP) and Customer Premises Network (CPN) that should be overcome to efficiently deploy FTTH service. Finally, based on the field trial test results, we proposed FTTH service deployment strategies.

Simple and reliable bidirectional optical amplifier suitable for variable traffic pattern networks

We proposed a simple and flexible bidirectional optical amplifier (BOA) that consists of one erbium-doped fiber amplifier (EDFA) and an arrayed waveguide grating (AWG). This BOA is especially suitable for networks having asymmetric traffic patterns since the circuit configuration of BOA can be modified easily by manipulation of AWG ports connection. We constructed the BOA and demonstrated its performance for 10-Gb/s symmetric traffic over 80-km single-mode fiber. The proposed BOA worked well with negligible relative intensity noise by virtue of intrinsic tolerance of backscattering in an AWG.

FTTH field trial of injection locking based WDM-PON system

In this paper, we will present the results of WDM-PON based FTTH field trial test which held in the city of Gwangju. We have implemented injection locked FP-LD based WDM-PON system and reliably delivered IP-TV, N-PVR, HD-VoD, EoD and Internet service as FTTH service through the system during the field trial test. We have also verified that the WDM-PON system worked well to provide QoS guaranteed 100Mbps bandwidth per subscriber. Furthermore, we have presented network designing issues in OSP and CPN that should be overcome to efficiently deploy FTTH service. Finally, based on the field trial test results, we proposed FTTH service deployment strategies.

Comparison with Dispersion Compensation Scheme Using 10 Gbit/s × 40 Channels Wavelength Division Multiplexing Transmission over 323 km of Field Installed Non-Zero Dispersion Shift Fiber

We experimentally investigated the transmission characteristics of 400 Gbit/s (10 Gbit/s

The influence of chirp and extinction ratio on directly modulated DFB lasers

{times}

WDM-PON system based on the laser light injected reflective semiconductor optical amplifier

40 channels) WDM signals with 100 GHz channel spacing over 323 km of installed NZ_DSF. The installed fiber has optical properties of 0.28 dB/km attenuation, 4.3 ps/nm/km dispersion,

METHOD AND SYSTEM FOR ALLOWING REMOTE ACCESS DEVICE TO ACCESS REMOTE ACCESS TARGET DEVICE WITHIN HOME NETWORK

0.083ps/nm^2/km

REMOTELY ACCESSING AND CONTROLLING USER EQUIPMENT IN A PRIVATE NETWORK

dispersion slope and less than

1Gbps x 16 channel Wavelength Division Multiplexing-Passive Optical Network Field Trial Test

0.05ps/km^{1/2}