Geometrical tolerance of optical fiber and laser diode for passive alignment using LTCC technology

Mathew, Sumy; Spira, Steffen; Stephan, Ralf; Welker, Tilo; Gutzeit, Nam; Müller, Jens; Hein, Matthias

doi:10.1109/gemic.2015.7107828

Cited by 7 publications

(2 citation statements)

References 13 publications

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“…The single mode condition of the waveguide structure is not considered in the above figure, so the subsequent analysis is combined with the single mode cutoff condition. Soref [15,16] et al's research results have indicated that a singlemode SOI waveguide with a large cross-section can be realized as long as the waveguide structure parameters satisfy the single-mode condition:…”

Section: Ssc Modelmentioning

confidence: 99%

Simulation of structural design with high coupling efficiency in external cavity semiconductor laser

Yang-Jie¹,

Guo²,

Xiong³

et al. 2019

J. Semicond.

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For external cavity semiconductor lasers (ECSLs), high coupling efficiency is critical to reducing the linewidth. In this paper, the coupling efficiency between the laser diode and the waveguide grating has been improved, with proposals for its improvement presented, including adding spot-size conversion (SSC) and using a silicon-on-insulator (SOI) waveguide. The results indicate an increase of coupling efficiency from 41.5% to 93.1%, which exhibits an improvement of approximately 51.6% over conventional schemes. The relationship between coupling efficiency and SOI waveguide structures is mainly concerned in this article. These findings provide a new way for the future research of the narrow linewidth of ECSL.

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Section: Ssc Modelmentioning

confidence: 99%

Simulation of structural design with high coupling efficiency in external cavity semiconductor laser

Yang-Jie¹,

Guo²,

Xiong³

et al. 2019

J. Semicond.

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“…The multilayer property of the LTCC technology can be beneficially applied for the passive alignment of a fiber with the laser diode [18]. In previous work, we have demonstrated the need for proper fiber alignment and the feasibility of using LTCC for this purpose [13]. Fig.…”

Section: Introductionmentioning

confidence: 98%

Passive alignment of an optical fiber on a multi-layer ceramic module for radio-over-fiber applications

Mathew

Welker

Gutzeit

et al. 2016

2016 German Microwave Conference (GeMiC)

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The low-temperature co-fired ceramics technology is a successful and space-qualified technology enabling threedimensional microwave design. Now we are pursuing an important step further towards multi-functional multi-purpose hybrid assembly technologies: combining ceramic technology with optical fiber technology. In such systems, fiber alignment is a crucial issue. Extra gadgets used for the fiber alignment make the system more complex and bulky. Considering the many features offered by the ceramic multi-layer technology for size reduction, it is advantageous to use this technology for the passive alignment of an optical fiber above the optical source. In this paper, the passive fiber alignment employing flip-chip mounting of a vertical cavity surface emitting laser in a ceramic substrate is presented. We have studied the performance of the resulting optical link with respect to figures typical for radioover-fiber applications, namely the link gain, noise figure, and the spurious-free dynamic range and compared the results with a link where the VCSEL was wire bonded to the circuit.Keywords-LTCC; analog optical link; vertical cavity surface emitting laser (VCSEL); passive fiber alignment; radio-over-fiber

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Analysis of Bending Effects for Optical-Bus-Couplers

Lorenz

Nieweglowski

Wolter

et al. 2016

2016 IEEE 66th Electronic Components and Technology Conference (ECTC)

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Geometrical tolerance of optical fiber and laser diode for passive alignment using LTCC technology

Cited by 7 publications

References 13 publications

Simulation of structural design with high coupling efficiency in external cavity semiconductor laser

Simulation of structural design with high coupling efficiency in external cavity semiconductor laser

Passive alignment of an optical fiber on a multi-layer ceramic module for radio-over-fiber applications

Analysis of Bending Effects for Optical-Bus-Couplers

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