Industry-Academic Cooperation Foundation, Chosun University

Oe Solutions Co., Ltd.

Sang Ho Lee

Tae Kyun Kim

Suk Han Yun

In Hwa Lee

Joo Ho Park

Provided are a tape-type fluorine preparation using a biodegradable polymer and a method of preparing the same, and preferably, a tape-type fluorine preparation which is attached to teeth to gradually release fluorine, thereby maintaining a suitable fluorine concentration in an oral cavity, and self-degraded after a certain amount of time, and a method of preparing the same. The tape-type fluorine preparation includes a pressure-sensitive adhesive sheet containing fluorine and capable of being attached to teeth, and the pressure-sensitive adhesive sheet is formed of a biodegradable hydrophilic polymer in an oral cavity to reduce a rate at which the fluorine is released.

Tape-type fluorine preparation using biodegradable polymer and method of preparing the same

Disclosed herein is a high speed optical transceiver module, which makes it possible to prevent a wavelength shift and thus to achieve low power and high efficiency by forming a hole with a predetermined depth in a stem heat sink for dissipating heat generated in an LD through a lower portion of a stem and putting a micro heater in the hole, thereby compensating for the temperature of the LD in order to prevent wavelength shift caused by the influence of the ambient temperature on an LD chip in a transistor outline (TO) when an un-cooled optical transceiver module is driven at low temperature and to prevent the communication from being impossible when the ambient temperature is lowered during the communication using a CWDM scheme.

Growing community of inventors

Gwangju, South Korea

Sang Ho Lee