Dr. Y.S. Liu Profile

Dr. Y.S. Liu

Director, Ctr for Photonics Research

SPIE Involvement:

Author

Proceedings Article | 26 January 2004 Paper

Progress of solid state lighting technology in Taiwan

Yung Sheng Liu, Jung-Tsung Hsu, Jim Chi, Shyi-Ming Pan, Te-Chung Wang

Proceedings Volume 5187, (2004) https://doi.org/10.1117/12.514080

KEYWORDS: Light emitting diodes, LED lighting, Solid state lighting, Light sources and illumination, Gallium nitride, Packaging, Lamps, Optoelectronics, Metalorganic chemical vapor deposition, LED displays

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Proceedings Article | 25 September 1998 Paper

Polyimide-based guided-wave multigigabit per second optical clock signal distribution system for Cray T-90 supercomputer

Hong-Fa Luan, Linghui Wu, Bipin Bihari, Jianhua Gan, Ray Chen, Suning Tang, Randy Wickman, Bruce Pecor, Yung-Sheng Liu

Proceedings Volume 3417, (1998) https://doi.org/10.1117/12.323482

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Proceedings Article | 5 May 1998 Paper

High-density optical interconnect using polymer waveguides interfaced to a VCSEL array in molded plastic packaging

Yung-Sheng Liu, R. Wojnarowski, W. Hennessy, P. Piacente, John Rowlette, Michael Kadar-Kallen, Jared Stack, Yue Liu, Andrzej Peczalski, Ajay Nahata

Proceedings Volume 3288, (1998) https://doi.org/10.1117/12.307590

KEYWORDS: Waveguides, Polymers, Vertical cavity surface emitting lasers, Polymer multimode waveguides, Packaging, Optical interconnects, Optical alignment, Connectors, Amplifiers, Transceivers

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Proceedings Article | 29 July 1997 Paper

Polyimide-based waveguides for guided-wave multi-Gbit/sec MCM optoelectronic interconnects

Ray Chen, Linghui Wu, Feiming Li, Suning Tang, Michael Dubinovsky, J. Qi, Clint Schow, Joe Campbell, Randy Wickman, Bruce Pecor, Mary Hibbs-Brenner, Julian Bristow, Yung-Sheng Liu, Scott Rattan, Chad Noddings

Proceedings Volume 10290, 102900M (1997) https://doi.org/10.1117/12.279830

KEYWORDS: Waveguides, Optoelectronics, Signal processing, Vertical cavity surface emitting lasers, Optical clocks, Signal attenuation, Computing systems, Signal detection, Sensors, Silicon

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We present the fabrication of polyimide-based H-tree waveguides for a multi-GBit/sec optical clock signal distribution in a Si CMOS process compatible environment. Such a clock distribution system is to replace the existing electronic counterpart associated with high-performance computers. A waveguide propagation loss of 0.21 dB/cm at 850 nm was experimentally confirmed for the l-to-48 waveguide fanout device, l-to-2 splitting loss and bending loss were measured to be 0.25 dB and higher. The planarization requirement of the optical interconnection layer among many electrical interconnection layers makes the employment of tilted grating a choice of desire. Theoretical calculation predicts the 1-to-l free-space to waveguide coupling with an efficiency as high as 95%. Currently, a coupling efficiency of 35% was experimentally confirmed due to the limited index difference between guiding and cladding layers. Further experiments aimed at structuring a larger guiding/cladding layer index differences are under investigation. To effectively couple an optical signal into the waveguide through the tided grating coupler, the accuracy of the wavelength employed is pivotal. This makes the usage of the vertical cavity surface-emitting lasers (VCSELs) and VCSEL arrays the best choice when compared with edge-emitting lasers. Modulation bandwidth as high as 6 GBit/sec was demonstrated at 850 nm. Such a wavelength is compatible with Si-based photodetectors. Temperature dependence of the threshold current up to 155 °C was measured which will determine the power dissipation issue of the optoelectronic packaging. Finally, the first fully monolithic Si-MOSFET integrated receiver was made as the optical clock signal detector. To further enhance the bandwidth of such a detector, a resonant cavity structure with Si/Si02 as the bottom mirror was employed. The measured demodulation bandwidth is over 10 GHz. A fully integrated guided-wave optical clock signal distribution system having planarized grating couplers, H-tree Si- CMOS process compatible waveguides, VCSELs and Si-based photo-receivers will be demonstrated in the near future.

Proceedings Article | 4 April 1997 Paper

Optoelectronic backplane interconnect technology development (POINT)

Yung-Sheng Liu, W. Hennessy, R. Wojnarowski, Julian Bristow, Yue Liu, John Rowlette, Jared Stack, James Yardley, Louay Eldada, Richard Osgood, Robert Scarmozzino, Shin Lee, Susant Patra

Proceedings Volume 3005, (1997) https://doi.org/10.1117/12.271090

KEYWORDS: Waveguides, Packaging, Polymers, Optoelectronic packaging, Vertical cavity surface emitting lasers, Optical alignment, Polymer multimode waveguides, Transmitters, Optical interconnects, Optoelectronics

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Proceedings Article | 4 April 1997 Paper

Design and fabrication of passive optical polymer waveguide components for multimode parallel optical links

Robert Scarmozzino, Richard Osgood, Louay Eldada, James Yardley, Yue Liu, Julian Bristow, Jared Stack, John Rowlette, Yung-Sheng Liu

Proceedings Volume 3005, (1997) https://doi.org/10.1117/12.271094

KEYWORDS: Waveguides, Polymer multimode waveguides, Polymers, Computer aided design, Beam propagation method, Signal attenuation, Optical interconnects, Optical fibers, Laser sources, Chlorine

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Proceedings Article | 29 March 1996 Paper

MCM board level optical interconnects using passive polymer waveguides with hybrid optical and electrical multichip module packaging

Julian Bristow, Yue Liu, Terry Marta, Klein Johnson, Brian Hanzal, Andrzej Peczalski, Sommy Bounnak, Yung-Sheng Liu, Herbert Cole

Proceedings Volume 2691, (1996) https://doi.org/10.1117/12.236922

KEYWORDS: Waveguides, Packaging, Polymers, Polymer multimode waveguides, Optical interconnects, Vertical cavity surface emitting lasers, Interfaces, Optoelectronic devices, Optoelectronics, Cladding

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Proceedings Article | 30 January 1996 Paper

Polymer optical interconnect technology (POINT): optoelectronic packaging and interconnect for board and backplane applications

Y. S. Liu, R. Wojnarowski, W. Hennessy, Julian P. Bristow, Yue Liu, Andrzej Peczalski, John Rowlette, Alan Plotts, Jared Stack, James Yardley, Louay Eldada, Richard Osgood, Robert Scarmozzino, Sing Lee, Volkan Ozguz

Proceedings Volume 10284, 102840N (1996) https://doi.org/10.1117/12.229274

KEYWORDS: Polymers, Optical interconnects, Optoelectronic packaging, Optoelectronics, Packaging, Diffractive optical elements, Amplifiers, Vertical cavity surface emitting lasers, Optical alignment, Computer simulations

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Proceedings Article | 5 April 1995 Paper

Cost-effective optoelectronic packaging for multichip modules and backplane level optical interconnects

Julian Bristow, Yue Liu, Terry Marta, Sommy Bounnak, Klein Johnson, Yung-Sheng Liu, Herbert Cole

Proceedings Volume 2400, (1995) https://doi.org/10.1117/12.206334

KEYWORDS: Waveguides, Packaging, Connectors, Optical interconnects, Optoelectronics, Optoelectronic devices, Interfaces, Polymers, Optics manufacturing, Manufacturing

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Proceedings Article | 5 April 1995 Paper

Polymer-based optical interconnect technology: a route to low-cost optoelectronic packaging and interconnect

Yung-Sheng Liu, Herbert Cole, Julian Bristow, Yue Liu

Proceedings Volume 2400, (1995) https://doi.org/10.1117/12.206296

KEYWORDS: Packaging, Polymers, Optical interconnects, Optoelectronic packaging, Vertical cavity surface emitting lasers, Waveguides, Optoelectronic devices, Computing systems, Electronic components, Thin films

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Proceedings Article | 2 May 1994 Paper

Hybrid integration of electrical and optical interconnects

Yung-Sheng Liu, Herbert Cole, Julian Bristow, Yue Liu

Proceedings Volume 2153, (1994) https://doi.org/10.1117/12.174526

KEYWORDS: Waveguides, Packaging, Optical interconnects, Optical alignment, Optoelectronics, Optics manufacturing, Thermography, Optoelectronic devices, Adaptive optics, Optoelectronic packaging

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Proceedings Article | 28 October 1992 Paper

ROC's island-wide fiber infrastructure: architectures, services, technologies, opportunities, and challenge

Chi-Chang Chen, Song-Yueh Gao, Wann-Lii Jang, Beeshow Ju, K-S Lin, Steve Lin, Young Liu, Bing-Chang Peng, Chia-Shen Sun, Kou-Tan Wu

Proceedings Volume 1817, (1992) https://doi.org/10.1117/12.131343

KEYWORDS: Optical communications, Stars, Networks, Video, Copper, Telecommunications, Structured optical fibers, Databases, Network architectures, Computer architecture

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Proceedings Article | 1 March 1991 Paper

Novel excimer laser beam delivery technique using binary masks

Yung-Sheng Liu, Rosalie Levinson, J. Rose

Proceedings Volume 1377, (1991) https://doi.org/10.1117/12.25034

KEYWORDS: Binary data, Excimer lasers, Beam delivery, Image resolution, Pulsed laser operation, Spherical lenses, Materials processing, Laser energy, Ultraviolet radiation, Cornea

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Showing 5 of 13 publications

SPIE Conference Volume | 28 June 2000

Input/Output and Imaging Technolgies II

Conference Committee Involvement (22)

Sixteenth International Conference on Solid State Lighting and LED-based Illumination Systems

9 August 2017 | San Diego, California, United States

Fifteenth International Conference on Solid State Lighting and LED-based Illumination Systems

31 August 2016 | San Diego, California, United States

Fourteenth International Conference on Solid State Lighting and LED-based Illumination Systems

12 August 2015 | San Diego, California, United States

Thirteenth International Conference on Solid State Lighting and LED-based Illumination Systems

20 August 2014 | San Diego, California, United States

LED-based Illumination Systems

26 August 2013 | San Diego, California, United States

Twelfth International Conference on Solid State Lighting and Fourth International Conference on White LEDs and Solid State Lighting

13 August 2012 | San Diego, California, United States

Eleventh International Conference on Solid State Lighting

22 August 2011 | San Diego, California, United States

Tenth International Conference on Solid State Lighting

2 August 2010 | San Diego, California, United States

Ninth International Conference on Solid State Lighting

3 August 2009 | San Diego, California, United States

Eighth International Conference on Solid State Lighting

11 August 2008 | San Diego, California, United States

Photonics Packaging, Integration, and Interconnects VIII

22 January 2008 | San Jose, California, United States

Seventh International Conference on Solid State Lighting

27 August 2007 | San Diego, California, United States

Sixth International Conference on Solid State Lighting

14 August 2006 | San Diego, California, United States

Fifth International Conference on Solid State Lighting

1 August 2005 | San Diego, California, United States

Semiconductor and Organic Optoelectronic Materials and Devices

9 November 2004 | Beijing, China

Asia-Pacific Optical Communications

7 November 2004 | Beijing, China

Fourth International Conference on Solid State Lighting

3 August 2004 | Denver, Colorado, United States

Materials, Active Devices, and Optical Amplifiers

4 November 2003 | Wuhan, China

Asia-Pacific Optical and Wireless Communications

2 November 2003 | Wuhan, China

Third International Conference on Solid State Lighting

5 August 2003 | San Diego, California, United States

Testing and Reliability of Optelectronic Devices

26 January 2001 | San Jose, CA, United States

Input/Output and Imaging Technologies II

26 July 2000 | Taipei, Taiwan

Showing 5 of 22 Conference Committees

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