Dr. Bowen Song Profile

Dr. Bowen Song

at Univ of California Santa Barbara

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Publications (5)

Proceedings Article | 4 March 2022 Presentation + Paper

Towards fully monolithic silicon-based integrated photonics: MOCVD grown lasers on silicon by blanket and selective area heteroepitaxy

Jonathan Klamkin, Si Zhu, Bei Shi, Lei Wang, Bowen Song

Proceedings Volume 12021, 1202107 (2022) https://doi.org/10.1117/12.2609931

KEYWORDS: Silicon, Semiconductor lasers, Metalorganic chemical vapor deposition, Gallium arsenide, Heteroepitaxy, Silicon photonics, Scanning transmission electron microscopy, Scanning electron microscopy, Continuous wave operation, Pulsed laser operation

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Proceedings Article | 25 February 2020 Paper

InP grating coupler design for vertical coupling of InP and silicon chips

Yingheng Tang, Keisuke Kojima, Mitsunobu Gotoda, Satoshi Nishikawa, Shusaku Hayashi, Toshiaki Koike-Akino, Kieran Parsons, Thomas Meissner, Bowen Song, Fengqiao Sang, Xiongsheng Yi, Jonathan Klamkin

Proceedings Volume 11283, 112830H (2020) https://doi.org/10.1117/12.2545082

KEYWORDS: Silicon, Finite-difference time-domain method, Optical simulations, Optical design, Beam shaping, Waveguides, Optical testing, Reflectivity, Cladding, Infrared cameras

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Proceedings Article | 4 March 2019 Paper

Integrated photonics for NASA applications

Michael Krainak, Mark Stephen, Elisavet Troupaki, Sarah Tedder, Baraquiel Reyna, Jonathan Klamkin, Hongwei Zhao, Bowen Song, Joseph Fridlander, Minh Tran, John Bowers, Keren Bergman, Michal Lipson, Anthony Rizzo, Ipshita Datta, Nathan Abrams, Shayan Mookherjea, Seng-Tiong Ho, Qiang Bei, Yingyan Huang, Yongming Tu, Behzad Moslehi, James Harris, Andrey Matsko, Anatoliy Savchenkov, Guangyao Liu, Roberto Proietti, S. J. Yoo, Leif Johansson, Christophe Dorrer, Francisco Arteaga-Sierra, Jie Qiao, Songbin Gong, Tingyi Gu, Osgar John Ohanian, Xingjie Ni, Yimin Ding, Yao Duan, Hamed Dalir, Ray Chen, Volker Sorger, Tin Komljenovic

Proceedings Volume 10899, 108990F (2019) https://doi.org/10.1117/12.2509808

KEYWORDS: Waveguides, Modulation, Silicon, Modulators, Photonic integrated circuits, Graphene, Oscillators, Integrated photonics, Integrated optics, Silicon photonics

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NASA is working with US industry and academia to develop Photonic Integrated Circuits (PICs) for: (1) Sensors (2) Analog RF applications (3) Computing and free space communications. The PICs provide reduced size, weight, and power that is critical for space-based systems. We describe recent breakthrough 3D monolithic integration of photonic structures, particularly high-speed graphene-silicon devices on CMOS electronics to create CMOS-compatible highbandwidth transceivers for ultra-low power Terabit-scale optical communications. An integrated graphene electro-optic modulator has been demonstrated with a bandwidth of 30 GHz. Graphene microring modulators are especially attractive for dense wavelength division multiplexed (DWDM) systems. For space-based optical communication and ranging we have demonstrated generating a variable number of channels from a single laser using breadboard components, using a single-sideband carrier-suppressed (SSBCS) modulator driven by an externally-supplied RF tone (arbitrary RF frequency), a tunable optical bandpass filter, and an optical amplifier which are placed in a loop. We developed a Return--to-Zero (RZ) Differential Phase Shift Keying (DPSK) laser transmitter PIC using an InP technology platform that includes a tunable laser, a Semiconductor Optical Amplifier (SOA), high-speed Mach-Zehnder Modulator (MZM), and an electroabsorption (EAM) modulator. A Silicon Nitride (SiN) platform integrated photonic circuit suitable for a spectrally pure chip-scale tunable opto-electronic RF oscillator (OEO) that can operate as a flywheel in high precision optical clock modules, as well as radio astronomy, spectroscopy, and local oscillator in radar and communications systems is needed. We have demonstrated a low noise optical frequency combs generation from a small OEO prototypes containing very low loss (~1 dB) waveguide couplers of various shapes and sizes integrated with an ultrahigh-Q MgF2 resonators. An innovative miniaturized lab-on-a-chip device is being developed to directly monitor astronaut health during missions using ~3 drops of body fluid sample like blood, urine, and potentially other body fluids like saliva, sweat or tears. The first-generation system comprises a miniaturized biosensor based on PICs (including Vertical Cavity Surface Emitting Laser – VCSEL, photodetector and optical filters and biochemical assay that generates a fluorescent optical signal change in response to the target analyte.

Proceedings Article | 22 February 2018 Presentation + Paper

3D hybrid integrated lasers for silicon photonics

B. Song, S. Pinna, Y. Liu, L. Megalini, J. Klamkin

Proceedings Volume 10537, 105370V (2018) https://doi.org/10.1117/12.2290445

KEYWORDS: Silicon, Semiconductor lasers, Silicon photonics, Mirrors, Hybrid silicon lasers, Wavelength tuning

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Proceedings Article | 30 January 2018 Paper

System and device technologies for coherent optical communications

Keisuke Kojima, Toshiaki Koike-Akino, David Millar, Bingnan Wang, Milutin Pajovic, Kieran Parsons, Bowen Song, Jonathan Klamkin

Proceedings Volume 10560, 105600H (2018) https://doi.org/10.1117/12.2291869

KEYWORDS: Modulation, Forward error correction, Optical communications, Signal to noise ratio, Polarization, Telecommunications, Tunable lasers, Integrated optics, Semiconductor lasers, Digital signal processing

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