Conference Proceedings

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Improved RF Power Extraction from 1.55μm Ge/Si n-i-p Photodiodes with Load Impedance Optimization (with Andrew L. Huard, Molly Piels, Anand Ramaswamy, and John E. Bowers), 23rd Annual Meeting of the IEEE Photonics Society (2010)

The RF output power of Ge/Si n-i-p waveguide photodetectors is improved by increasing the load...

 

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High-Speed Concatenation of Frequency Ramps Using Sampled Grating Distributed Bragg Reflector Laser Diode Sources for OCT Resolution Enhancement (with Brandon George), Proceedings of the SPIE - The International Society for Optical Engineering (2010)

Brandon George and Dennis Derickson California Polytechnic State Univ. (USA) Wavelength tunable sampled grating distributed...

 

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Generation of High Speed, Linear Wavelength Sweeps Using Sampled Grating Distributed Bragg Reflector Lasers (with Shane O' Connor and Michael A. Bernacil), Proceedings of the IEEE LEOS 21st Annual Meeting: Newport Beach, CA (2008)

Wavelength-tunable sampled grating distributed Bragg reflector (SG-DBR) lasers are used for telecommunications applications in which...

 

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Microwave Signal Generation Using Self-Heterodyning of a Fast Wavelength Switching SG-DBR Laser (with Michael A. Bernacil, Shame O' Connor, Ben Maher, and Andew Dekelaita), 2008 IEEE MTT-S International Microwave Symposium Digest (2008)

Microwave signal generation using self-heterodyning of a single wavelength tunable SG-DBR laser is demonstrated. Microwave...

 

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SGDBR Single-Chip Wavelength Tunable Lasers for Swept Source OCT (with Mike Bernacil, Andrew DeKelaita, Ben Maher, Shane O'Connor, Mathew N. Sysak, and Leif Johanssen), Proceedings of SPIE (2008)

Sampled Grating Distributed Bragg Reflector (SGDBR) monolithic tunable lasers are now entering the production phase...

 

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A High Power, High Efficiency Amplifier using GaN HEMT (with Bumjin Kim and Cheng Sun), Proceedings of the Asia-Pacific Microwave Conference: Bangkok, Thailand (2007)

A class B and a class F power amplifier are described using a GaN HEMT...

 

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Photonics Education Program at California Polytechnic State University (with Samuel Agbo, Sean Jobe, John Sharpe, Dan Wasche, and Xiaomin Jin), The Tenth International Topical Meeting on Education & Training in Optics and Photonics: Ottawa, Ontario, Canada (2007)

California Polytechnic State University (Cal Poly) has an active photonics-related program. The thrusts of the...

 

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Chromatic Dispersion of Thin Film Filters (with R. M. Fortenberry, M. A. Scobey, L. F. Stokes, and P. C. Egerton), Proceedings of The Optical Fiber Communications Conference: Anaheim, CA (2005)

This paper discusses the chromatic dispersion effects of thin film filters used in telecommunications systems....

 

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Thin Film Interference Filters for 25GHz Channel Spacing (with M. A. Scobey, R. M. Fortenberry, L. F. Stokes, and W. P. Kastanis), Proceedings of the Optical Fiber Communication Conference and Exhibit (2002)
 

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Effects of Hydrogen on InP Light-Emitting Devices Etched in a Methane-Hydrogen Environment (with Patricia Beck, Forrest Kellert, and Tim Bagwell), Proceedings of the Indium Phosphide and Related Materials Conference: Hokaido, Japan (1995)

Research has been conducted on the physical damage and hydrogenation effects during RF plasma exposure...

 

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Explanation of Timing Jitter Mechanisms in Multisegment Mode-Locked Semiconductor Lasers, Proceedings of the Lasers and Electro-Optics Society Annual Meeting (1993)

Multisegment mode-locked semiconductor lasers offer a simple, high performance solution for short pulse generation. Six...

 

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High Power Edge-Emitting Light Emitting Diodes at 1.5µ with Extremely Low Back Facet Feedback (with J. E. Fouquet, G. R. Trott, W. V. Sorin, M. J. Ludowise, and D. M. Braun), Proceedings of the 1993 Lasers and Electro-Optics Society Annual Meeting (1993)

This paper describes novel semiconductor sources for optical low coherence reflectometry (OLCR), a measurement technique...

 

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Stabilization of Passively Mode-Locked Semiconductor Laser Repetition Frequency (with Roger Helkey, Alan Mar, John Wasserbauer, and Robert L. Thornton), Proceedings of the 1992 Lasers and Electro-Optics Society Annual Meeting (1992)
 

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Mode-Locking of High-Power Resonant-Optical-Waveguide Diode Laser Arrays (with Alan Mar, Roger Helkey, John Bowers, and Dan Botez), Proceedings of the 1992 Semiconductor Laser Conference (1992)

We report the first mode-locked operation of a resonant optical waveguide (ROW semiconductor laser array....

 

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Integrated Optical Transmitters and Receivers Using Multi-Segment Laser Processes (with J. G. Wasserbauer, K. Giboney, R. J. Helkey, J. R. Karin, A. Mar, and J. E. Bowers), Proceedings of the 1992 Lasers and Electro-Optics Society Meeting on Integrated Photonics: Santa Barbara, CA (1992)
 

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Microwave and Millimeter Wave Signal Generation Using Mode-Locked Semiconductor Lasers with Intra-Waveguide Saturable Absorbers (with R. J. Helkey, A. Mar, J. G. Wasserbauer, Y. G. Wey, and J. E. Bowers), IEEE Microwave Symposium Digest (1992)

Microwave and millimeter wave signals can be generated using mode-locked semiconductor lasers with intra-waveguide saturable...

 

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A 100-kHz - 22 GHz Instrumentation Photoreceiver (with C. M. Miller and R. L. Van Tuyl), IEEE Microwave Symposium Digest (1988)

A photoreceiver consisting of a high-speed p-i-n photodetector and a 100-kHz to 22-GHz distributed amplifier...

 

Patents

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Optical Filter Elements and Methods of Making and Using Same (with Michael A. Scobey, Lucien P. Ghislain, and Loren F. Stokes), United States Patent Number: 6,798,553 B1 (2004)

Optical filter elements and optical systems comprise optically mismatched etalons and optically mismatched stacked, optically...

 

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Optically Coupled Etalons and Methods of Making and Using Same (with Michael A. Scobey, Lucien P. Ghislain, and Loren F. Stokes), United States Patent Number: 6,678,093 B1 (2004)

Optical elements comprise stacked, optically matched and optically coupled etalons, at least one of the...

 

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Optical System with 1xN Interleaver and Methods of Making and Using Same (with Michael A. Scobey, Lucien P. Ghislain, and Loren F. Stokes), United States Patent Number: 6,658,172 B1 (2003)

An optical system and method are disclosed for multiplexing or de-multiplexing channels within a wavelength...

 

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Multi-wavelength Polarization Scrambling Device (with James R. Stimple and Eugene Rudkevich), United States Patent Number: 6,137,925 (2000)

A polarization scrambling device randomly varies the polarization states of multiple applied optical signals. The...

 

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Signal Monitoring Apparatus for Wavelength Divison Multiplexed Optical Telecommunication Networks (with Roger Lee Jungerman), United States Patent Number: 5,796,479 (1998)

A detector array spectrometer simultaneously monitors wavelength, power, and signal-to-noise ratio of wavelength division multiplexed...

 

Articles

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Optical Low Coherence Reflectometry Applications to Meat Tenderness Testing (with Matthew Schlutz), Honors Undergraduate Research Journal (2008)

The goal of this research project is to develop an optical low coherence reflectometry (OLCR)...

 

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Ultrafast Dynamics in Field-Enhanced Saturate Absorbers (with J. R. Karin, R. J. Helkey, R. Nagarajan, D. S. Allin, J. E. Bowers, and R. L. Thornton), Applied Physics Letters (1994)

Absorption recovery dynamics of GaAs/AlGaAs field-enhanced waveguide saturable absorbers are studied by pump-probe differential transmission...

 

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Analysis of Laser Pulse Chirping in Mode-Locked Vertical-Cavity Surface-Emitting Lasers (with Wenbin Jiang and John E. Bowers), Journal of Quantum Electronics (1993)

Mode-locked vertical cavity lasers have a large cross-sectional area and consequently a large saturation energy...

 

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Short Pulse Generation Using Multisegment Mode-Locked Semiconductor Lasers (with R. J. Helkey, A. Mar, Judy R. Karin, J. G. Wasserbauer, and J. E. Bowers), Journal of Quantum Electronics (1992)
 

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Repetition Frequency Stabilisation of Passively Mode-Locked Semiconductor Lasers (with R. J. Helkey, A. Mar, J. G. Wasserbauer, J. E. Bowers, and R. L. Thornton), Electronics Letters (1992)

The repetition frequency of an external cavity mode-locked GaAs semiconductor diode laser has been stabilized...

 

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Suppression of Multiple Pulse Formation in External-Cavity Mode-Locked Semiconductor Lasers Using Intrawaveguide Saturable Absorbers (with R. J. Helkey, A. Mar, Judy R. Karin, J. E. Bowers, and R. L. Thornton), IEEE Photonics Technology Letters (1992)

Imperfect antireflection coatings in external-cavity mode-locked semiconductor lasers can cause multiple output pulse generation. The...

 

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Comparison of Timing Jitter in External and Monolithic Cavity Mode-Locked Semiconductor Lasers (with P. A. Morton, J. E. Bowers, and R. L. Thornton), Applied Physics Letters (1991)

A comprehensive timing jitter comparison is made for mode-locked semiconductor lasers using active, passive, and...

 

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Efficient Single-Heterojunction Al0.27Ga0.73As/GaAs p-i-n Photodiodes with 22-GHz Bandwidths (with C. Johnson, S. Sloan, D. M. Braun, J. L. Russell, M. Zurakowski, M. Lightner, F. Kellert, G. Patterson, R. Koo, and J. E. Bowers), IEEE Transactions on Electron Devices (1991)

A report is presented on the design, fabrication, testing, and modeling of single-heterojunction Al0.27Ga0.73As/Ga p-i-n...

 

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High-Frequency Electrooptic Fabry-Perot Modulators (with R. J. Simes, R. H. Yan, C. C. Barron, D. G. Lishan, Judy R. Karin, L. A. Coldren, M. Rodwell, S. Elliott, and B. Hughes), IEEE Photonics Technology Letters (1991)

Electrooptic modulators built from GaAs/AlxGa1-xAs Fabry-Perot cavities operating up to 6.5 GHz are reported. The...

 

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Relative and Absolute Timing Jitter in Actively Mode-Locked Semiconductor Lasers (with A. Mar and J. E. Bowers), Proceedings of the IEEE International Semiconductor Laser Conference: Davos, Switzerland (1990)
 

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Self-Mode-Locking of a Semiconductor Laser Using Positive Feedback (with R. J. Helkey, A. Mar, P. A. Morton, and J. E. Bowers), Applied Physics Letters (1990)

A new mode-locking technique, self-mode-locking, is described which uses the detected optical pulses from the...