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| Open AccessLithium tantalate photonic integrated circuits for volume manufacturing
Electro-optical photonic integrated circuits based on lithium tantalate perform as well as current state-of-the-art ones using lithium niobate but the material has the advantage of existing commercial uses in consumer electronics, easing the problem of scalability.
- Chengli Wang
- , Zihan Li
- & Tobias J. Kippenberg
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Integrated frequency-modulated optical parametric oscillator
An integrated device that combines optical parametric oscillation and electro-optic modulation in lithium niobate creates a flat-top frequency-comb-like output with low power requirements.
- Hubert S. Stokowski
- , Devin J. Dean
- & Amir H. Safavi-Naeini
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Article
| Open Access3D integration enables ultralow-noise isolator-free lasers in silicon photonics
Three-dimensional integration of distributed-feedback lasers and ultralow-loss silicon nitride waveguides results in ultralow-noise lasers without the need for optical isolators.
- Chao Xiang
- , Warren Jin
- & John E. Bowers
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Integrated turnkey soliton microcombs
A turnkey regime for soliton microcombs is demonstrated, in which solitons are generated by switching on a co-integrated pump laser, eliminating the need for photonic and electronic control circuitry.
- Boqiang Shen
- , Lin Chang
- & John E. Bowers
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Frequency combs induced by phase turbulence
Wave destabilization is demonstrated in semiconductor ring lasers operating at low pumping levels, where ultrafast gain recovery leads to the emergence of a frequency comb regime owing to phase turbulence.
- Marco Piccardo
- , Benedikt Schwarz
- & Federico Capasso
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Article |
Controlling free electrons with optical whispering-gallery modes
The coupling between light and relativistic free electrons is enhanced through phase matching of electrons with optical whispering-gallery modes in dielectric microspheres and through extended modal lifetimes.
- Ofer Kfir
- , Hugo Lourenço-Martins
- & Claus Ropers
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Observation of the exceptional-point-enhanced Sagnac effect
precisely controllable integrated optical gyroscope based on stimulated Brillouin scattering is used to study non-Hermitian physics, revealing a four-fold enhancement of the Sagnac scale factor near exceptional points.
- Yu-Hung Lai
- , Yu-Kun Lu
- & Kerry Vahala
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Article |
All-optical spiking neurosynaptic networks with self-learning capabilities
An optical version of a brain-inspired neurosynaptic system, using wavelength division multiplexing techniques, is presented that is capable of supervised and unsupervised learning.
- J. Feldmann
- , N. Youngblood
- & W. H. P. Pernice
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Letter |
Low-loss plasmon-assisted electro-optic modulator
Ohmic losses in plasmonic devices can be reduced by exploiting ‘resonant switching’, in which light couples to surface plasmon polaritons only when in resonance and bypasses them otherwise.
- Christian Haffner
- , Daniel Chelladurai
- & Juerg Leuthold
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Letter |
Microresonator-based solitons for massively parallel coherent optical communications
Frequency combs produced by solitons in silicon-based optical microresonators are used to transmit data streams of more than 50 terabits per second in telecommunication wavelength bands.
- Pablo Marin-Palomo
- , Juned N. Kemal
- & Christian Koos
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News |
Scaled-down: new nano device can weigh single molecules
A tiny resonating beam, just 10 millionths of a meter in length, can measure the mass of a molecule or nanoparticle in real time.
- John Matson