A5062144737- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Semiconductor Lasers and Optical Devices
- Optical Network Technologies
- Advanced Photonic Communication Systems
- Photonic Crystals and Applications
- Advanced Fiber Optic Sensors
- Neural Networks and Reservoir Computing
- Mechanical and Optical Resonators
- Optical Coatings and Gratings
- Optical Coherence Tomography Applications
- Semiconductor Quantum Structures and Devices
- Nanowire Synthesis and Applications
- Advanced MEMS and NEMS Technologies
- Diamond and Carbon-based Materials Research
Cisco Systems (United States)
2018-2024
University of Kassel
2023
Cisco Systems (China)
2022
Optica
2022
Oracle (United States)
2015-2016
University of California, San Diego
2016
University of California, Santa Barbara
2009-2015
Mission College
2010-2011
Intel (United States)
2010-2011
We demonstrate a 16-channel, independently tuned waveguide surface grating optical phased array in silicon for two dimensional beam steering with total field of view 20° x 14°, width 0.6° 1.6°, and full-window background peak suppression 10 dB.
In this work we present the first fully-integrated free-space beam-steering chip using hybrid silicon platform. The photonic integrated circuit (PIC) consists of 164 optical components including lasers, amplifiers, photodiodes, phase tuners, grating couplers, splitters, and a crystal lens. PIC exhibited steering over 23° x 3.6° with beam widths 1° 0.6°.
The device and integration technology for silicon photonic transmitters are reviewed in this paper. hybrid platform enables on-chip lasers to be fabricated with circuits can integrated the CMOS back-end flow. Laser arrays from multiple die bonding quantum well intermixing techniques demonstrated extend spectral bandwidth laser array of transmitter. Two modulator technologies, modulators modulators, also described.
The demonstration of a 4λ×10Gbps Silicon Photonics CWDM link integrating all optical components, electronics and packaging technologies required for system integration is reported. Further the operating at 50Gbps, 4λ×12.5Gbps, also shown.
A hybrid silicon photonic integrated filter is proposed and demonstrated with a novel structure. This incorporates ring resonator in one arm of Mach-Zehnder interferometer making it possible to obtain programmable response. The optical consists 5-mm-long delay loop made low-loss waveguides thermal modulators resulting 0.164-nm free spectral range absolute phase tunability gain elements that allow for the tuning factor. microwave response this measured display 20 GHz.
A chip-scale optical source with integrated beam steering is demonstrated. The chip was fabricated using the hybrid silicon platform and incorporates an on-chip laser, waveguide splitter, amplifiers, phase modulators, surface gratings to comprise phased array across a 12° field of view in one axis. Tuning used achieve 1.8°(steered axis)×0.6°(nonsteered axis) width 7 dB background suppression for arbitrary direction within view.
We describe recent advances in hybrid silicon components and photonic integrated circuits. present a path towards scalable, ultralow cost circuits (PICs) on 300 mm substrates.
Here we experimentally demonstrate room temperature, continuous-wave (CW), 2.0 μm wavelength lasers heterogeneously integrated on silicon. Molecular wafer bonding of InP to Si is employed. These hybrid silicon operate CW up 35°C and emit 4.2 mW single-facet power at temperature. III-V tapers transfer light from a III-V/silicon optical mode into waveguide mode. enable the realization number sensing detection applications in compact photonic systems.
We demonstrate a surface-normal coupled tunable hybrid silicon laser array for the first time using passively-aligned, high-accuracy flip chip bonding. A 2x6 III-V reflective semiconductor optical amplifier (RSOA) with integrated total internal reflection mirrors is bonded to CMOS SOI grating couplers and ring reflectors form external-cavity array. Waveguide-coupled wall plug efficiency (wcWPE) of 2% output power 3 mW has been achieved all 12 lasers. further improved performance by reducing...
A detailed description of the non-linear effects in silicon is needed when designing ring resonators platform. The optical field propagating waveguide strongly absorbed due to two-photon-absorption (TPA) and free-carrier-absorption (FCA), which become more prominent with increasing input power ring. We present a new approach for modelling based resonators. have numerically solved problem coupling variation refractive index loss TPA, FCA , self-heating Shockley-Read-Hall (SRH) theory...
We investigate the athermal characteristics of silicon waveguides clad with TiO(2) designed for 1.3 µm wavelength operation. Using CMOS-compatible fabrication processes, we realize and experimentally demonstrate photonic ring resonators resonant wavelengths that vary by less than 6 pm/°C at µm. The measured resonance across 20-50°C temperature range show nearly complete cancellation first-order thermo-optical effects exhibit second-order expected from combination Si.
A Si/III-V hybrid laser has been a highly sought after device for energy-efficient and cost-effective high-speed silicon photonics communication. We present high wall-plug efficiency external-cavity created by integrating an independently optimized SOI ring reflector III-V gain chip. In our demonstration, the uncooled integrated achieved waveguide-coupled of 12.2% at room temperature with optical output power ~10 mW. The operated single-mode near 1550 nm linewidth 0.22 pm. This is tunable...
We present the design of a novel platform that is able to combine optical frequency bands spanning 4.2 octaves from ultraviolet mid-wave infrared into single, low M2 output waveguide. and realization key component in this combines wavelength 350 nm - 1500 6500 with demonstrated efficiency greater than 90% near-infrared infrared. The multi-octave spectral beam combiner concept realized using an integrated silicon nitride waveguides waveguides. Simulated bandwidth shown be over four octaves,...
Ring resonators with TiO2 core confinement factors from 0.07 to 0.42 are fabricated and measured for thermal sensitivity achieving -2.9 pm/K drift in the best case. Materials used CMOS compatible (TiO2, SiO2 Si3N4) on a Si substrate. The under discussed role of stress thermo-optic behavior is clearly observed when contrasting waveguides buried those etched sidewalls revealed air. Multiphysics simulations conducted provide theoretical explanation this phenomenon contrast more widely reported...
We report pump-probe measurements of time resolved optical transmission spectra Si and Si/poly-Si microrings after high free carrier densities have been generated by two-photon absorption the pump pulse. From measurements, we can extract recovery dynamics absorption, refractive index dispersion, carriers finally effective initial lifetimes. The method is validated comparing modelling simulations with measurements; obtained results are in very good agreement what predicted Shockley-Read-Hall...
The architecture and component technology of a low power, high capacity, short reach optical interconnect are detailed. Measurements from high-performance 300 mm silicon photonics components that comprise the system shown, along with quantum-dot mode-locked laser 20-channel comb source free space wall plug efficiencies up to 17%, advanced packaging techniques for 3D photonic-electronic integration, schematics integrated electronics control photonic circuits. Techniques operating such in...
We demonstrate sidewall gratings in an ultra-low-loss Si3N4 planar waveguide platform. Through proper geometrical design we can achieve coupling constant values between 13 and 310 cm(-1). The TE propagation loss over the range of 1540 to 1570 nm is below 5.5 dB/m.
Recent advances in nanophotonic fabrication have made the optical network-on-chip an attractive interconnect option for next-generation multi-/many-core systems, providing high bandwidth and power efficiency. Both post-fabrication runtime calibration of components (ring resonators) are essential to building a robust communication system, as they highly sensitive process thermal variation. Existing tuning methods based on bias voltage temperature adjustment require excessive fully compensate...
Free-space beam steering using optical phased arrays is a promising method for implementing free-space communication links and Light Detection Ranging (LIDAR) without the sensitivity to inertial forces long latencies which characterize moving parts. Implementing this approach on silicon-based photonic integrated circuit adds additional advantage of working with highly developed CMOS processing techniques. In work we discuss our progress in development fully 32 channel PIC widely tunable...
A III-V/Si₃N₄ platform on silicon is presented capable of broad-spectral performance with initial heterogeneous lasers near 1060 nm. Continuous wave Fabry-Perot laser results for InGaAs/GaAs multiple quantum well (MQW) output power approaching 0.25 mW Si demonstrated. Taper transmission loss measurements from III-V to Si₃N₄ are measured be 2.5±0.75 dB.
This paper discusses circuit based and waveguide athermalization schemes provides some design examples of athermalized lasers utilizing fully integrated athermal components as an alternative to power hungry thermo-electric controllers (TECs), off-chip wavelength lockers or monitors with lookup tables for tunable lasers. class solutions is important uncooled transmitters on silicon.
Get PDF Email Share with Facebook Tweet This Post on reddit LinkedIn Add to CiteULike Mendeley BibSonomy Citation Copy Text B. Koch, A. Alduino, L. Liao, R. Jones, M. Morse, Kim, W. Lo, J. Basak, H. Liu, Rong, Sysak, C. Krause, Saba, D. Lazar, Horwitz, Bar, S. Litski, K. Sullivan, O. Dosunmu, N. Na, T. Yin, F. Haubensack, I. Hsieh, Heck, Beatty, Bovington, and Paniccia, "A 4×12.5 Gb/s CWDM Si photonics link using integrated hybrid silicon lasers," in CLEO:2011 - Laser Applications Photonic...
We present a design of tunable hybrid laser based on III-V Reflective Semiconductor Optical Amplifier (RSOA) and Silicon Photonics (SiPh) external mirror that represents good trade off between high Wall-Plug Efficiency (WPE) tolerance to optical feedback caused by unwanted back reflections from the rest SiPh chip. The sensitivity different configurations, an important issue in many applications, is evaluated through calculation critical level effective Lang-Kobayashi model main results are...
We address the stability of a tunable hybrid laser based on III-V Reflective Semiconductor Optical Amplifier (RSOA) edge-coupled with Silicon Photonic (SiPh) dispersive mirror through model time-delayed algebraic differential equations that accounts for narrow band mirror. Our results allow to (i) analyze single mode lasing, (ii) quantify impact bandwidth damping relaxation oscillations and emergence photon-photon resonance, (iii) study tolerance external optical feedback. Thanks this...
We report the first closed-loop operation of a 100 Gbps polarization-insensitive, 4-channel wavelength-tracking WDM receiver in silicon photonics platform. Error-free is achieved with input polarization scrambling over wavelength change 4.5 nm using efficient thermal tuning Si microring demux, corresponding to greater than 60°C fluctuation temperature.