Lightron Figer-optic Devices Inc.

Lighthorn Fiber-optic Devices Inc.

Jeong-Hwan Cho

Young-Un Heo

Soo Yuk

Young Jae Nam

Keun-Jae Park

Seong-Seok Seo

Hyun-Jong Youm

Hyun-Won Cha

Oh-Sang Kwon

Kang-Yong Jung

The present invention relates generally to a passive optical network (PON)-based video overlay pluggable type optical network device that is easily connected and detached from an indoor optical network terminal (ONT) at a subscriber side, which transmits and receives an optical signal in which a video RF optical signal and a PON optical signal are overlaid, wherein a PON board for receiving and processing the PON optical signals and a video RF board for receiving and processing the video RF optical signals are easily removed for replacement from a housing including an optical sub-assembly (OSA), which separates the PON optical signal and the video RF optical signal, and the PON board and the video RF board are individually designed and configured in a removable manner so that interference between the signals is minimized and selective combinations and production are possible according to various types of PONs and video services.

Passive optical network-based video overlay pluggable type optical network device

The present invention relates to an optical transceiver using FEC, an optical transceiving system comprising the same, and a remote optical wavelength control method and, specifically, to an optical transceiver using FEC, the optical transceiver comprising: a laser diode driver (LDD) for driving a laser diode (LD) for outputting light; a transmitter optical sub-assembly (TOSA) for transmitting an optical signal received from the LD driver; a receiver optical sub-assembly (ROSA) for receiving the optical signal from the transmitter optical sub-assembly; a micro controller unit (MCU) for controlling the transmitter optical sub-assembly and the receiver optical sub-assembly and analyzing the optical signal; and a forward error correction (FEC) which is controlled by the micro controller unit and generates the optical signal by including, in an overhead excess data frame, control or monitoring request information of a subscriber-side base station.

Optical transceiver using FEC, optical transceiving system comprising same, and remote optical wavelength control method

Growing community of inventors

Sejong-si, South Korea

Jeong-Hwan Cho