Patents by Inventor Yao-Wun Jhang
Yao-Wun Jhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20200194962Abstract: A laser device includes a laser seed source, a pump source, a combiner and an optical fiber assembly. The laser seed source is configured to generate a seed laser light. The pump source is configured to generate a pumping laser light. The optical combiner is configured to combine the seed laser light and the pumping laser light and further output the seed laser light and the pumping laser light through an output end. The optical fiber assembly includes a first gain fiber and a first absorbing fiber. The first gain fiber has a first cladding and a first core. The first absorbing fiber has a second cladding and a second core. The second core is connected to the first core of the first gain fiber and configured to absorb a Raman wave signal of the seed laser light.Type: ApplicationFiled: December 26, 2018Publication date: June 18, 2020Inventors: Yao-Wun JHANG, Sheng-Bang HUNG, Shih-Ting LIN, Yu-Cian SYU, Jia-You WANG, Hong-Xi TSAU
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Publication number: 20170149206Abstract: A control method of speeding up light emission of a laser diode includes the following steps. First step is to boost the supply voltage from a first voltage potential to a second voltage potential before an emission period. At the beginning of the emission period, a current path conducts through the laser diode and a current source. One terminal of the laser diode is coupled to the current source, and the other terminal of the laser diode connects the supply voltage. When the current path is being conducted, the current source is in the transient state and provides a transient driving current; and the voltage difference between the two terminals of the laser diode is generated in response to the second voltage potential and is related to the transient driving current. When the transient driving current is larger than a threshold, the laser diode emits light.Type: ApplicationFiled: December 22, 2015Publication date: May 25, 2017Inventors: FU-ZEN CHEN, FU-SHUN HO, CHUN-CHIEH YANG, YU-CHENG SONG, YAO-WUN JHANG
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Publication number: 20150139592Abstract: An anti-reflection device, comprising: a first optical fiber, having a first optical fiber core; and a second optical fiber, having a second optical fiber core which is fusion spliced to the first fiber core to form a spliced point optical fiber core. Thereby, the present disclosure provides a method for manufacturing an anti-reflection device, comprising the step of: providing a fusion splicer to perform a parameter setup process upon at least one optical fiber so as to proceed with a splice process on the at least one optical fiber based on the result of the parameter setup process, while enabling an optical fiber alignment operation, an end surface preheating operation, an optical fiber splicing operation and an optical fiber fusion stretching operation during the proceeding of the splice process.Type: ApplicationFiled: December 26, 2013Publication date: May 21, 2015Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: HSIN-CHIA SU, CHIEN-MING HUANG, SHIH-TING LIN, YU-CHENG SONG, YAO-WUN JHANG
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Patent number: 8995054Abstract: An apparatus for generating a pulse train with an adjustable time interval is provided. The apparatus, being an annular optical cavity structure, includes a seed source receiving end, a pump source receiving end, an optical coupler, an optical combiner, a gain fiber, an optical path time regulator and a beam splitter. Thus, the apparatus is capable of generating a pulse train with an adjustable time interval to increase material processing quality and speed.Type: GrantFiled: December 21, 2012Date of Patent: March 31, 2015Assignee: Industrial Technology Research InstituteInventors: Yao-Wun Jhang, Hsin-Chia Su, Chien-Ming Huang, Shih-Ting Lin, Chih-Lin Wang, Chieh Hu
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Patent number: 8855152Abstract: A polarization modulation device for wideband laser comprises a first polarization maintaining optical fiber, a second polarization maintaining optical fiber, and a non-polarization maintaining optical fiber. The non-polarization maintaining optical fiber includes a first polarization controller coupled with the first polarization maintaining optical fiber, and a second polarization controller coupled with the second polarization maintaining optical fiber.Type: GrantFiled: November 23, 2011Date of Patent: October 7, 2014Assignee: Industrial Technology Research InstituteInventors: Yao Wun Jhang, Chien Ming Huang, Hsin Chia Su, Shih Ting Lin, Hong Xi Tsau
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Patent number: 8831052Abstract: An apparatus for generating a short-pulse laser using a temporally modulated sideband gain is provided. The apparatus includes a laser diode and an external reflector. By use of a time difference resulted by a nanosecond laser pulse signal at the external reflector, a sideband gain is obtained for generating a short-pulse picosecond laser output.Type: GrantFiled: May 28, 2013Date of Patent: September 9, 2014Assignee: Industrial Technology Research InstituteInventors: Yao-Wun Jhang, Chien-Ming Huang, Hsin-Chia Su, Shih-Ting Lin, Chih-Lin Wang, Hong-Xi Tsau
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Patent number: 8774239Abstract: An ultrafast laser generating system comprises a laser signal generator, a laser signal amplifier and a beam splitting element. The laser signal generator is configured to generate a first nanosecond pulse laser. The laser amplifier is configured to amplify the first nanosecond pulse laser from the laser signal generator so as to generate a second nanosecond pulse laser, which includes a picosecond pulse laser. The beam splitting element is configured to receive the second nanosecond pulse laser and split the picosecond pulse laser from the second nanosecond pulse laser.Type: GrantFiled: February 14, 2012Date of Patent: July 8, 2014Assignee: Industrial Technology Research InstituteInventors: Yao Wun Jhang, Hsin Chia Su, Chien Ming Huang, Chieh Hu, Hong Xi Tsau, Shih Ting Lin
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Publication number: 20140153597Abstract: An apparatus for generating a short-pulse laser using a temporally modulated sideband gain is provided. The apparatus includes a laser diode and an external reflector. By use of a time difference resulted by a nanosecond laser pulse signal at the external reflector, a sideband gain is obtained for generating a short-pulse picosecond laser output.Type: ApplicationFiled: May 28, 2013Publication date: June 5, 2014Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Yao-Wun JHANG, Chien-Ming Huang, Hsin-Chia Su, Shih-Ting Lin, Chih-Lin Wang, Hong-Xi Tsau
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Publication number: 20140133513Abstract: A laser device including a laser crystal, a first lens, an induced light source, a third light source and a second lens and a method for generating a laser light are disclosed. The laser crystal includes a gain medium, a first cross section and a second cross section. The first lens is located on the first cross section of the laser crystal. The induced light source is adapted to generate an induced light entering into the laser crystal through the first lens. The third light source is adapted to generate a third light which is adapted for emitting the laser crystal. The third light and the induced light are adapted to induce the liquid crystal to make the liquid crystal generate a first light and a second light.Type: ApplicationFiled: December 20, 2012Publication date: May 15, 2014Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Shih-Ting LIN, Chih-Lin WANG, Yao-Wun JHANG, Chieh HU, Hong-Xi TSAU
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Publication number: 20130329756Abstract: A laser apparatus includes an optical fiber component and a pump light source coupled to the optical fiber component. The optical fiber component includes a first fiber segment, a second fiber segment and a connecting segment that connects the first and second fiber segments. The first fiber segment includes a fiber core having a first diameter, and the second fiber segment includes a fiber core having a second diameter. The first diameter may be greater than the second diameter, and the connecting segment may have a periodically varying refractive index.Type: ApplicationFiled: August 9, 2013Publication date: December 12, 2013Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: SHIH TING LIN, YAO WUN JHANG, CHIEN MING HUANG, HSIN CHIA SU, CHIH LIN WANG, HONG XI TSAU
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Publication number: 20130141781Abstract: An ultrafast laser generating system comprises a laser signal generator, a laser signal amplifier and a beam splitting element. The laser signal generator is configured to generate a first nanosecond pulse laser. The laser amplifier is configured to amplify the first nanosecond pulse laser from the laser signal generator so as to generate a second nanosecond pulse laser, which includes a picosecond pulse laser. The beam splitting element is configured to receive the second nanosecond pulse laser and split the picosecond pulse laser from the second nanosecond pulse laser.Type: ApplicationFiled: February 14, 2012Publication date: June 6, 2013Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: YAO WUN JHANG, HSIN CHIA SU, CHIEN MING HUANG, CHIEH HU, HONG XI TSAU, SHIH TING LIN
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Publication number: 20130107898Abstract: A laser apparatus includes an optical fiber component and a pump light source coupled to the optical fiber component. The optical fiber component includes a first fiber segment, a second fiber segment and a connecting segment that connects the first and second fiber segments. The first fiber segment includes a fiber core having a first diameter, and the second fiber segment includes a fiber core having a second diameter. The first diameter may be greater than the second diameter, and the connecting segment may have a periodically varying refractive index.Type: ApplicationFiled: December 28, 2011Publication date: May 2, 2013Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: SHIH TING LIN, YAO WUN JHANG, CHIEN MING HUANG, HSIN CHIA SU, CHIH LIN WANG, HONG XI TSAU
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Patent number: 8270069Abstract: A UV light generator for receiving a baseband light beam from a baseband light source is provided. The UV light generator includes a first lens unit, a second lens unit, a first frequency doubling crystal and a second frequency doubling crystal. The baseband light beam from the baseband light source passes through the first lens unit. The first lens unit and the second lens unit control a minimum of baseband light spot position and a minimum of second harmonic light spot position. The first frequency doubling crystal is disposed between the first lens unit and the second lens unit, and located on the minimum of baseband light spot position. The second frequency doubling crystal is disposed between the first lens unit and the second lens unit, and located on the minimum of second harmonic light spot position.Type: GrantFiled: July 22, 2010Date of Patent: September 18, 2012Assignee: Industrial Technology Research InstituteInventors: Hsin-Chia Su, Chien-Ming Huang, Yao-Wun Jhang, Chih-Li Chen
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Publication number: 20120155499Abstract: A mode-locked laser system comprises a stimulating laser pump, a pulse-modulating laser pump, and an optical oscillator. The stimulating laser pump and the pulse-modulating laser pump emit a stimulating laser light and a pulse-modulating laser light. The optical oscillator further includes a gain medium, a saturable absorber, a first terminal, and a second terminal. The stimulating laser light and the pulse-modulating laser light are emitted into the gain medium to generate a gain laser light. When the gain laser light is emitted into the saturable absorber, an ultra-short pulse laser light is generated.Type: ApplicationFiled: February 8, 2011Publication date: June 21, 2012Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chien Ming HUANG, Shih Ting LIN, Hsin Chia SU, Yao Wun JHANG
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Patent number: 8204350Abstract: An optical fiber with filtering thin film includes a first ferrule having a first through hole and a first contact surface. A first fiber is disposed into the first through hole, extending to the first contact surface. A first interface coupling material is between the first ferrule and the first fiber. A second ferrule has a second through hole and a second contact surface. A second fiber is disposed into the second through hole, extending to the second contact surface. A second interface coupling material is between the second ferrule and the second fiber. The first contact surface and the second contact surface are parallel and have an included tilt angle from a perpendicular transverse plane of first fiber. An optical filtering film is disposed between the first contact surface and the second contact surface. The first fiber and the second fiber are aligned.Type: GrantFiled: September 25, 2009Date of Patent: June 19, 2012Assignee: Industrial Technology Research InstituteInventors: Shih-Ting Lin, Yao-Wun Jhang, Hsin-Chia Su, Chien-Ming Huang, Chieh Hu
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Publication number: 20120148182Abstract: A polarization modulation device for wideband laser comprises a first polarization maintaining optical fiber, a second polarization maintaining optical fiber, and a non-polarization maintaining optical fiber. The non-polarization maintaining optical fiber includes a first polarization controller coupled with the first polarization maintaining optical fiber, and a second polarization controller coupled with the second polarization maintaining optical fiber.Type: ApplicationFiled: November 23, 2011Publication date: June 14, 2012Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Yao Wun JHANG, Chien Ming Huang, Hsin Chia Su, Shih Ting Lin, Hong Xi Tsau
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Publication number: 20110157684Abstract: A UV light generator for receiving a baseband light beam from a baseband light source is provided. The UV light generator includes a first lens unit, a second lens unit, a first frequency doubling crystal and a second frequency doubling crystal. The baseband light beam from the baseband light source passes through the first lens unit. The first lens unit and the second lens unit control a minimum of baseband light spot position and a minimum of second harmonic light spot position. The first frequency doubling crystal is disposed between the first lens unit and the second lens unit, and located on the minimum of baseband light spot position. The second frequency doubling crystal is disposed between the first lens unit and the second lens unit, and located on the minimum of second harmonic light spot position.Type: ApplicationFiled: July 22, 2010Publication date: June 30, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Hsin-Chia Su, Chien-Ming Huang, Yao-Wun Jhang, Chih-Li Chen
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Patent number: 7944954Abstract: A laser apparatus with all optical-fiber includes a plurality of pumping light sources in different wave bands and an optical-fiber laser system. The optical-fiber laser system includes an optical fiber at least doped with erbium (Er) element and doped with or not doped with ytterbium (Yb) element according to a need. The optical-fiber laser system outputs a laser light through the pumping light source.Type: GrantFiled: March 9, 2009Date of Patent: May 17, 2011Assignee: Industrial Technology Research InstituteInventors: Yao-Wun Jhang, Chien-Ming Huang, Hsin-Chia Su, Shih-Ting Lin, Li-Ting Wang, Hong-Xi Cao
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Patent number: 7920605Abstract: An all-fiber color laser and a light-illuminating method thereof are disclosed. The steps of the light-illuminating method include: providing a fiber color laser having a pump light source and an optical fiber with a multi-level wavelength gain medium, a first grating assembly and a second grating assembly; radiating a laser via the pump light source; generating a plurality of laser beams with various wavelengths via the multi-level wavelength gain medium; adjusting the deformation of the second grating assembly to control output of the laser beams with various wavelengths; and executing periodical modulation to generate a periodical lengthwise deformation of the second grating assembly for mixing color.Type: GrantFiled: April 9, 2009Date of Patent: April 5, 2011Assignee: Industrial Technology Research InstituteInventors: Yao-Wun Jhang, Chien-Ming Huang, Hsin-Chia Su, Shih-Ting Lin, Li-Ting Wang
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Publication number: 20110026892Abstract: An optical fiber with filtering thin film includes a first ferrule having a first through hole and a first contact surface. A first fiber is disposed into the first through hole, extending to the first contact surface. A first interface coupling material is between the first ferrule and the first fiber. A second ferrule has a second through hole and a second contact surface. A second fiber is disposed into the second through hole, extending to the second contact surface. A second interface coupling material is between the second ferrule and the second fiber. The first contact surface and the second contact surface are parallel and have an included tilt angle from a perpendicular transverse plane of first fiber. An optical filtering film is disposed between the first contact surface and the second contact surface. The first fiber and the second fiber are aligned.Type: ApplicationFiled: September 25, 2009Publication date: February 3, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Shih-Ting Lin, Yao-Wun Jhang, Hsin-Chia Su, Chien-Ming Huang, Chieh Hu