Fabrication of a 2.5Gbps×4 channel optical micro-module for O-PCB application

Lee, Hyun‐Shik; An, Shinmo; Kim, Young; Kim, Do-Kyoon; Kang, Jin-Ku; Choi, Young‐Wan; Lee, Seung Gol; O, Beom Hoan; Lee, El-Hang

doi:10.1016/j.mee.2006.01.118

Cited by 15 publications

(3 citation statements)

References 4 publications

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“…The laser soldering process was introduced in the 1980s for the surface mounted technology. It received wide attention in recent years, which was used in diode laser package , cylindrical microfabrication , and optical PCB application . However, the application of laser soldering on electric connector is limited.…”

Section: Introductionmentioning

confidence: 99%

Numerical modeling and optimization of laser soldering for Micro‐USB electric connector

Zeng

Wang

et al. 2014

Int J Numerical Modelling

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SUMMARYThe laser soldering process was introduced in Micro-USB electronic packaging in this paper. Numerical modeling and analysis was used for laser process parameter design, because experimental measurements of peak temperature and soldering stress are expensive and often intractable. Accurate knowledge of the residual stress and distortion is a prerequisite for the reliability of the electric connector. The present work proposes a three-dimensional transient heat transfer model of Micro-USB package laser soldering process. The calculated thermal cycles and distribution are subsequently used to calculate the distortion and thermal stresses. Meanwhile, the effect of process parameters on residual stress and pin distortion was discussed, and the tensile strength, microstructure, and residual stresses of laser soldering were tested. It can be concluded that the proper laser soldering parameters and power can improve the mechanical property of solder joints on Micro-USB connector.

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Section: Introductionmentioning

confidence: 99%

Numerical modeling and optimization of laser soldering for Micro‐USB electric connector

Zeng

Wang

et al. 2014

Int J Numerical Modelling

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“…The coupling technique between the electro‐optical devices and the optical waveguides (polymer waveguides, fibers) is considered the most important part in the fabrication and increases the cost of optical printed circuit boards (OPCB). Micromirrors, microlenses, microball lenses , and 45° micromirrors integrated on or into the polymer waveguide ends have demonstrated a good coupling from the light source to waveguide and from waveguide to photodetector. Optical fibers have also been used as a simple direct coupling method.…”

Section: Introductionmentioning

confidence: 99%

Simple Low‐Cost Fabrication Method of A Buried Plastic Optical Waveguide for Circuits in Plastic Interconnects

Hamid

Neeli

Fickenscher

et al. 2013

Micro & Optical Tech Letters

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A simple and cost-effective technology to integrate an optical waveguide into circuits in plastic board has been used to develop a 0.6 3 0.6 mm 2 polymer waveguide in a plastic substrate. A simple direct coupling method was used to couple the light from a multimode optical fiber to the SU-8 waveguide core. The interconnect achieved 2.45 and 2.54 dB/cm propagation loss at 1550 nm and 1310 nm wavelength, respectively, for a polyvinyl chloride polymer cladding and 1.66 and 1.51 dB/cm at 1550 and 1310 nm wavelength, respectively, for polymethyl methacrylate polymer cladding.

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“…But both methods have large calculation error and easily conduce to distortion of the image. The image feature points were extracted by scale-invariant feature transform (SIFT) and used to generate some circular patches in [7]. The watermark is embedded into multiple patches.…”

Section: Introductionmentioning

confidence: 99%

Digital Watermarking Method against Rotation Attack Based on Angle Measurement

Zhao

2013

AMM

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Digital image watermarking algorithm based on contourlet transform and discrete cosine transform (DCT) is proposed in this paper. The original carrier image is decomposed with contourlet transform. The low pass component is divided into sub blocks. The watermark bits are embedded by the quantization of direct current (DC) coefficients of these sub blocks. In order to against rotation attack, the radon transform is used to project the image onto projection space to convert the rotation of the original image to a translation of the projection and then the bi-spectrum analysis approach is applied to estimate the rotate angle of the test image. The detection process is robust to rotation attack by virtue of this rotation correction method.

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Fabrication of a 2.5Gbps×4 channel optical micro-module for O-PCB application

Cited by 15 publications

References 4 publications

Numerical modeling and optimization of laser soldering for Micro‐USB electric connector

Numerical modeling and optimization of laser soldering for Micro‐USB electric connector

Simple Low‐Cost Fabrication Method of A Buried Plastic Optical Waveguide for Circuits in Plastic Interconnects

Digital Watermarking Method against Rotation Attack Based on Angle Measurement

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