800 GHz continuously tunable fiber DFB laser for high speed high accuracy spectral characterization

2001 ◽  
Author(s):  
Erlend Rønnekleiv ◽  
Jon Thomas Kringlebotn ◽  
Dag Thingbø
Keyword(s):  
High Speed ◽  
High Accuracy ◽  
Spectral Characterization ◽  
Dfb Laser

scholarly journals Multi-Touch Interaction Generation Device by Spatiotemporally Switching Electrodes

Electronics ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1475
Author(s):  
Masahiro Okamoto ◽  
Kazuya Murao
Keyword(s):  
High Speed ◽  
High Accuracy ◽  
Conductive Ink ◽  
Control Board ◽  
Touch Panel ◽  
Electrode Size ◽  
Touch Input ◽  
Touch Interaction ◽  
Multiple Electrodes ◽  
Touch Panels

With the spread of devices equipped with touch panels, such as smartphones, tablets, and laptops, the opportunity for users to perform touch interaction has increased. In this paper, we constructed a device that generates multi-touch interactions to realize high-speed, continuous, or hands-free touch input on a touch panel. The proposed device consists of an electrode sheet printed with multiple electrodes using conductive ink and a voltage control board, and generates eight multi-touch interactions: tap, double-tap, long-press, press-and-tap, swipe, pinch-in, pinch-out, and rotation, by changing the capacitance of the touch panel in time and space. In preliminary experiments, we investigated the appropriate electrode size and spacing for generating multi-touch interactions, and then implemented the device. From the evaluation experiments, it was confirmed that the proposed device can generate multi-touch interactions with high accuracy. As a result, tap, press-and-tap, swipe, pinch-in, pinch-out, and rotation can be generated with a success rate of 100%. It was confirmed that all the multi-touch interactions evaluated by the proposed device could be generated with high accuracy and acceptable speed.

scholarly journals High Speed Direct Modulation of a Heterogeneously Integrated InP/SOI DFB Laser

2016 ◽  
Vol 34 (8) ◽  
pp. 1683-1687 ◽  
Author(s):  
Amin Abbasi ◽  
Christos Spatharakis ◽  
Giannis Kanakis ◽  
Nuno Sequeira Andre ◽  
Hadrien Louchet ◽  
...  
Keyword(s):  
High Speed ◽  
Direct Modulation ◽  
Dfb Laser

1.55 μm High Speed Partly Gain-Coupled DFB Lasers with Periodically Etched Strained-Layer Quantum Wells

1997 ◽  
Vol 08 (03) ◽  
pp. 475-494 ◽  
Author(s):  
Toshihiko Makino
Keyword(s):  
Quantum Wells ◽  
High Speed ◽  
Carrier Transport ◽  
Stop Band ◽  
Longitudinal Distribution ◽  
Modulation Bandwidth ◽  
Carrier Injection ◽  
Strained Layer ◽  
High Modulation ◽  
Dfb Laser

The high speed performance of partly gain-coupled (GC) DFB lasers consisting of periodically etched strained-layer quantum wells (QW's) is reviewed with comparisons to the equivalent index-coupled (IC) DFB lasers with the same active layers. It is shown that the GC DFB laser has a –3 dB modulation bandwidth of 22 GHz at 10 mW with a stable single mode oscillation at the longer side of the Bragg Stop-band due to in-phase gain coupling. A theoretical analysis is also presented based on the local-normal-mode transfer-matrix laser model which takes into account both the longitudinal distribution of laser parameters and carrier transport effects. The mechanism for high modulation bandwidth of the GC DFB laser is attributed to a higher differential gain due to a reduced carrier transport time which is provided by an effecient carrier injection from the longitudinal etched interface of the QW's.

High-Speed Modulation of Lateral p-i-n Diode Structure Electro-Absorption Modulator Integrated With DFB Laser

2015 ◽  
Vol 33 (6) ◽  
pp. 1235-1240 ◽  
Author(s):  
Koichi Hasebe ◽  
Tomonari Sato ◽  
Koji Takeda ◽  
Takuro Fujii ◽  
Takaaki Kakitsuka ◽  
...  
Keyword(s):  
High Speed ◽  
Diode Structure ◽  
Speed Modulation ◽  
Dfb Laser ◽  
High Speed Modulation
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