Industrial Technology Research Institute

Ying-Tso Lin

Wen-Chin Lin

Chun-Jen Liao

Chieh Hu

Ying-Hui Yang

Lih-Gen Sheu

Chi-Feng Chan

Zih-Yi Li

Shang-Yu Hsu

A laser processing system includes a laser source, an optical splitting unit, a frequency conversion unit and at least one optical mixer. The optical splitting unit is provided to divide light emitted by the laser source into a first light and a second light, and the first light and the second light have the same wavelength range. The frequency conversion unit is provided to convert the second light into a working light. The working light includes a frequency converted light, and the frequency converted light and the second light have different wavelength ranges. The optical mixer is provided to mix the first light with the frequency converted light.

Laser processing system

An injection device includes a housing, a plunger, and a heating unit. The plunger is slidably arranged within the housing thereby performing a plunging movement therein. The heating unit is disposed within the housing for generating a heat energy inside the housing such that a filling material inside the housing can be soften and be transformed into a movable filling material with viscosity by absorbing the heat energy from the heating unit.

Injection device and heating unit thereof

The invention provides an optical amplifying system having a structure with two amplification levels to amplify received optical signals. The optical amplifying system includes a Michelson interferometer, a preamplifier, and a post amplifier. In the preamplifier and the post-amplifier, respectively have a light pumping source, a wavelength multiplexer, and an optical gain media. The Michelson interferometer includes an optical coupler and an optical grating set composed of a pair of optical gratings. The optical gratings are located different optical passes, and its central wavelength is equal to the intended wavelength. The optical grating can be formed on a piezoelectric substrate or an electrothermal substrate so that the central wavelength can be changed by applying stress or heat. The intended wavelength reflected by the Michelson interferometer can therefore be adjusted. The preamplifier and the post-amplifier are coupled together through the optical coupler of the Michelson interferometer. Furthermore, an isolator can also be coupled between the preamplifier and the Michelson interferometer so as to avoid the backward propagation noise.

Optical amplifier

Growing community of inventors

Hsinchu County, Taiwan

Ying-Tso Lin