Photonic integration in the palm of your hand: generic technology and multi-project wafers, technical roadblocks, challenges and evolution.

2017 ◽  
Author(s):  
Pascual Muñoz
Keyword(s):  
Photonic Integration

scholarly journals Optoelectronic frequency-modulated continuous-wave terahertz spectroscopy with 4 THz bandwidth

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Lars Liebermeister ◽  
Simon Nellen ◽  
Robert B. Kohlhaas ◽  
Sebastian Lauck ◽  
Milan Deumer ◽  
...  
Keyword(s):  
Fiber Optics ◽  
Continuous Wave ◽  
Dynamic Range ◽  
Terahertz Spectroscopy ◽  
Beat Signal ◽  
Photonic Integration ◽  
Terahertz Time Domain Spectroscopy ◽  
Destructive Testing ◽  
Optical Delay ◽  
Broadband Terahertz

AbstractBroadband terahertz spectroscopy enables many promising applications in science and industry alike. However, the complexity of existing terahertz systems has as yet prevented the breakthrough of this technology. In particular, established terahertz time-domain spectroscopy (TDS) schemes rely on complex femtosecond lasers and optical delay lines. Here, we present a method for optoelectronic, frequency-modulated continuous-wave (FMCW) terahertz sensing, which is a powerful tool for broadband spectroscopy and industrial non-destructive testing. In our method, a frequency-swept optical beat signal generates the terahertz field, which is then coherently detected by photomixing, employing a time-delayed copy of the same beat signal. Consequently, the receiver current is inherently phase-modulated without additional modulator. Owing to this technique, our broadband terahertz spectrometer performs (200 Hz measurement rate, or 4 THz bandwidth and 117 dB peak dynamic range with averaging) comparably to state-of-the-art terahertz-TDS systems, yet with significantly reduced complexity. Thickness measurements of multilayer dielectric samples with layer-thicknesses down to 23 µm show its potential for real-world applications. Within only 0.2 s measurement time, an uncertainty of less than 2 % is achieved, the highest accuracy reported with continuous-wave terahertz spectroscopy. Hence, the optoelectronic FMCW approach paves the way towards broadband and compact terahertz spectrometers that combine fiber optics and photonic integration technologies.

scholarly journals Discretely Tunable Semiconductor Lasers Suitable for Photonic Integration

2009 ◽  
Vol 15 (3) ◽  
pp. 482-487 ◽  
Author(s):  
D.C. Byrne ◽  
J.P. Engelstaedter ◽  
Wei-Hua Guo ◽  
Qiao Yin Lu ◽  
B. Corbett ◽  
...  
Keyword(s):  
Semiconductor Lasers ◽  
Photonic Integration

SURFACE EMITTING LASERS

1992 ◽  
Vol 03 (03n04) ◽  
pp. 263-277 ◽  
Author(s):  
KENICHI IGA
Keyword(s):  
Cavity Surface ◽  
Photonic Integration ◽  
Parallel Surface ◽  
Surface Emitting Lasers ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Technical Issues ◽  
Basic Technology ◽  
Emitting Lasers ◽  
Vertical Cavity

In this paper we review the progress and basic technology of vertical cavity surface emitting lasers together with related parallel surface operating optical devices. First, the concept of a vertical cavity surface emitting laser is presented, and then currently developed devices and their performances will be introduced. We will then feature some technical issues, such as multilayer structures, 2-dimensional arrays, photonic integration, etc. Lastly, future prospects for parallel lightwave subsystems using surface emitting lasers will be discussed.

High-density 3D electronic-photonic integration

2015 ◽  
Author(s):  
V. Stojanovic ◽  
K. T. Settaluri ◽  
S. Lin ◽  
S. Moazeni ◽  
E. Timurdogan ◽  
...  
Keyword(s):  
High Density ◽  
Photonic Integration
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