Lightron Fiber-optic Devices Inc.

Lightron Figer-optic Devices Inc.

Young-Un Heo

Sung Jin Park

Jeong-Hwan Cho

Soo Yuk

Taek Hyung Kim

Oh-Sang Kwon

Keun-Jae Park

Hyun-Jong Youm

Hyun-Won Cha

Seong-Seok Seo

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

According to the present disclosure, a controlling unit arbitrarily determines a current set temperature of a temperature setting unit to cause a light generating unit connected to the temperature setting unit to generate an optical signal having a wavelength according to the current set temperature, thereby making it possible to effectively reduce a wavelength overlap phenomenon that may occur when a plurality of R-ONUs in a passive optical network simultaneously transmit the optical signals.

Method for converting wavelength of optical signal in passive optical network

Growing community of inventors

Sejong-si, South Korea

Young-Un Heo