Fabrication of superluminescent diode (SLD) for gyro light source with broadband, high power, and large polarization-extinction ratio performance

2020 ◽  
Author(s):  
Chung Wei Hsiao ◽  
Yi-Hsin Fang ◽  
Yang-Jeng Chen ◽  
Zhen-Yu Weng ◽  
Jyun-Ye Chu ◽  
...  
Keyword(s):  
Light Source ◽  
High Power ◽  
Extinction Ratio ◽  
Superluminescent Diode ◽  
Polarization Extinction Ratio

High Power Red Laser Diode for Projector Light Source

2019 ◽  
pp. 1283
Author(s):  
Masato Hagimoto ◽  
Shintaro Miyamoto ◽  
Yuki Kimura ◽  
Haruki Fukai ◽  
Manabu Hashizume ◽  
...  
Keyword(s):  
Light Source ◽  
Laser Diode ◽  
High Power

scholarly journals Analysis on High-Power Seaport LED Luminaire with Uniform Light Distribution Based on Optimized Lens and Heatsink

2021 ◽  
Vol 11 (9) ◽  
pp. 4035
Author(s):  
Jinsheon Kim ◽  
Jeungmo Kang ◽  
Woojin Jang
Keyword(s):  
Light Source ◽  
High Power ◽  
Heat Dissipation ◽  
Light Emitting Diode ◽  
Light Distribution ◽  
Light Sources ◽  
Led Light ◽  
High Power Led ◽  
Distribution Requirement ◽  
Lighting Application

In the case of light-emitting diode (LED) seaport luminaires, they should be designed in consideration of glare, average illuminance, and overall uniformity. Although it is possible to implement light distribution through auxiliary devices such as reflectors, it means increasing the weight and size of the luminaire, which reduces the feasibility. Considering the special environment of seaport luminaires, which are installed at a height of 30 m or more, it is necessary to reduce the weight of the device, facilitate replacement, and secure a light source with a long life. In this paper, an optimized lens design was investigated to provide uniform light distribution to meet the requirement in the seaport lighting application. Four types of lens were designed and fabricated to verify the uniform light distribution requirement for the seaport lighting application. Using numerical analysis, we optimized the lens that provides the required minimum overall uniformity for the seaport lighting application. A theoretical analysis for the heatsink structure and shape were conducted to reduce the heat from the high-power LED light sources up to 250 W. As a result of these analyses on the heat dissipation characteristics of the high-power LED light source used in the LED seaport luminaire, the heatsink with hexagonal-shape fins shows the best heat dissipation effect. Finally, a prototype LED seaport luminaire with an optimized lens and heat sink was fabricated and tested in a real seaport environment. The light distribution characteristics of this prototype LED seaport luminaire were compared with a commercial high-pressure sodium luminaire and metal halide luminaire.

Broadband superluminescent diode light source at 1330 nm with 180 nm spectral bandwidth

2015 ◽  
Vol 51 (5) ◽  
pp. 408-409
Author(s):  
Yu. Kostin ◽  
A. Chamorovskiy ◽  
S.D. Yakubovich
Keyword(s):  
Light Source ◽  
Spectral Bandwidth ◽  
Superluminescent Diode

scholarly journals Compact Photonic Crystal Polarization Beam Splitter Based on the Self-Collimation Effect

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 198
Author(s):  
Geyu Tang ◽  
Huamao Huang ◽  
Yuqi Liu ◽  
Hong Wang
Keyword(s):  
Optical Communications ◽  
Beam Splitter ◽  
Extinction Ratio ◽  
Polarized Light ◽  
The Self ◽  
Polarization Beam Splitter ◽  
Optical Interconnection ◽  
Beam Splitting ◽  
Beam Splitters ◽  
Polarization Extinction Ratio

We propose a new compact polarization beam splitter based on the self-collimation effect of two-dimensional photonic crystals and photonic bandgap characteristics. The device is composed of a rectangular air holes-based polarization beam splitting structure and circular air holes-based self-collimating structure. By inserting the polarization beam splitting structure into the self-collimating structure, the TE and TM polarized lights are orthogonally separated at their junction. When the number of rows in the hypotenuse of the inserted rectangular holes is 5, the transmittance of TE polarized light at 1550 nm is 95.4% and the corresponding polarization extinction ratio is 23 dB; on the other hand, the transmittance of TM polarized light is 88.5% and the corresponding polarization extinction ratio is 37 dB. For TE and TM polarized lights covering a 100 nm bandwidth, the TE and TM polarization extinction ratios are higher than 18 dB and 30 dB, respectively. Compared with the previous polarization beam splitters, our structure is simple, the size is small, and the extinction ratio is high, which meets the needs of modern optical communications, optical interconnection, and optical integrated systems.

scholarly journals Lifetime prediction of a multi-chip high-power LED light source based on artificial neural networks

2019 ◽  
Vol 12 ◽  
pp. 361-367 ◽  
Author(s):  
Hongwei Liu ◽  
Dandan Yu ◽  
Pingjuan Niu ◽  
Zanyun Zhang ◽  
Kai Guo ◽  
...  
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Light Source ◽  
High Power ◽  
Lifetime Prediction ◽  
Led Light ◽  
High Power Led ◽  
Artificial Neural

High-power EUV (13.5 nm) light source

2010 ◽  
Vol 40 (8) ◽  
pp. 720-726 ◽  
Author(s):  
Vladimir M Borisov ◽  
Galina N Borisova ◽  
Aleksandr Yu Vinokhodov ◽  
S V Zakharov ◽  
Aleksandr S Ivanov ◽  
...  
Keyword(s):  
Light Source ◽  
High Power
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