Patent
Optical coupler optically coupling a light beam of a semiconductor laser source with a single mode optical waveguide or fiber
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TLDR
In this article, a semiconductor laser and an optical waveguide of an optical coupler, formed on a substrate, are optically coupled with each other by aligning their positions horizontally by using a plurality of laser elements and cores for the laser and the waveguide respectively and arranging them in an array respectively.Abstract:
A semiconductor laser and an optical waveguide of an optical coupler, formed on a substrate are optically coupled with each other by aligning their positions horizontally by using a plurality of laser elements and cores for the laser and the waveguide respectively and arranging them in an array respectively so that a difference between their pitches is less than double of tolerance tolerated for optically coupling with each other, the waveguide having partially a composite core composed of: a main core; a sub core surrounding the main core and having a refractive index lower than that of the main core; and a cladding layer surrounding the sub core and having a refractive index lower than that of the sub core.read more
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Patent
Wavelength-variable semiconductor laser, optical integrated device utilizing the same, and production method thereof
TL;DR: In this paper, a wavelength-variable semiconductor laser is defined as a laser with at least an active layer region and a distributed Bragg reflection region, and an optical integrated device includes at least one semiconductor and one optical waveguide.
Patent
Transceiver assembly for use in fiber optics communications
TL;DR: A transceiver assembly for use in fiber optic communications systems where multiple optical fibers are used in transmitting and receiving optical signals has been proposed in this paper, where the assembly is adapted for being mechanically and optically connected with a ferrule supporting a set of optical communications fibers.
Patent
Parallel fiber optics communications module
Hengju Cheng,Lee L. Xu +1 more
TL;DR: In this article, an optoelectronic subassembly for fiber optic communications systems where multiple parallel optical fibers are used in transmitting and receiving optical signals is presented. But it is used for either converting photonic signals to electrical signals (in a receiver) or electrical signals to photonic signal in a transmitter.
Patent
Method for preparing optical waveguide substrate
TL;DR: An optical waveguide substrate is prepared by forming grooves in a silicon substrate in accordance with the pattern of a desired waveguide device, thermally oxidizing the silicon substrate to form a peripheral quartz layer surrounding the grooves, burying in the groove a doped quartz glass layer having a higher refractive index, abrading the surface of the resulting structure to be flat, and forming on the flat surface a glass layer with a lower as discussed by the authors.
Patent
VCSEL assembly with edge-receiving optical devices
TL;DR: In this article, a method and system for conditioning the output signals of an array of surface-emitting laser with an EH array is presented, where the array of EH devices are aligned by alignment features and slots, which are fabricated on the optical bench substrate.
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Patent
Precision alignment of optoelectronic devices
Mark W. Beranek,George Edward Charles,Barbara M. Foley,F. Lilienthal Ii Peter,Muhammed A. Shahid +4 more
TL;DR: In this paper, an optoelectronic module is described in which a device is precisely aligned with an optical fiber, and a plurality of positioning members are adjustably positioned on the first member for supporting the third member to maintain aligned relation of the device with the axis.
Patent
Optical coupling structure and a fabrication process thereof
TL;DR: In this paper, the authors propose an optical coupling structure, which consists of a common substrate carrying a pair of parallel ridges as a first engagement structure, a first subcarrier mounted on the common substrate, the first sub-carrier carrying a second engagement structure including a plurality of groove pairs such that one of the groove pairs engaged with the ridges forming the first engagement, and a second sub-subcarrier mounting on the ground substrate.