Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Yutaka Kinugasa

Takuya Matsumoto

Hiroyuki Yagyu

Nobuyuki Asahi

Tadahiro Yamaji

Makoto Nishimura

Tsutomu Niiho

Yuichi Uchida

Nobuyuki Miyagawa

Nobuyuki Asashi

Makoto Nisimura

There is provided an optical module in which leaked light or the like from a plurality of optical elements on the same substrate is made less likely to affect adjacent optical elements, and a cross-talk noise can be thereby significantly reduced. The optical module includes an internal waveguide in a first trench of a substrate, a mirror section, and optical elements. A plurality of the first trenches of the substrate are formed independently of each other and substantially in parallel with each other, and lengths of adjacent first trenches from the end surface of the substrate are made different from each other. The optical elements are mounted on the surface of the substrate so as to oppose the minor sections formed at the tip portions of the first trenches having the different lengths.

Optical module

Disclosed is an optical module which improves optical coupling efficiency either when configured to receive an optical signal from an optical fiber with a light receiving element or when configured to receive an optical signal from a light emitting element with an optical fiber. The optical module includes: a substrate () having in the surface thereof a first groove () and a second groove () formed, with this second groove () being configured to have a substantially V-shaped cross section formed deeper than the first groove and being formed in continuation from the first groove; and an internal waveguide () provided within the first groove () of the substrate (). The optical further modules a mirror portion () for changing an optical path, provided at the front end of the first groove (); an optical element () mounted on the surface of the substrate () so as to face the mirror portion (), and configured to emit an optical signal to a core () of the internal waveguide () via the mirror portion (). Moreover, the optical module further includes an optical fiber () having a fiber cladding () placed within the second groove () and a fiber core () optically connected to the core () of the internal waveguide ().

To provide a photoelectric converter capable of reducing the height of the device. The photoelectric converter includes: a light emitting element or a light receiving element; an IC circuit for transmitting/receiving an electric signal to/from the light emitting element or the light receiving element; a mount substrate adapted to be mounted on one surface from the side on which the light emitting element emits light, or the side on which the light receiving element receives light; an electric connector adapted to be provided on the one surface or the other surface of the mount substrate, and to be attached and detached to and from an external connector; and a waveguide adapted to be provided on the mount substrate along the one surface or the other surface of the mount substrate, and to be optically coupled to the light emitting element or the light receiving element.

Photoelectric converter providing a waveguide along the surface of the mount substrate

An optical module includes an emitter-side mounting substrate, a receiver-side mounting substrate and an external waveguide substrate. The mounting substrate is provided with a waveguide having a core and a pair of fitting recesses. The external waveguide substrate is provided with an external waveguide having a core, a pair of fitting tabs and a lap joint portion. As the fitting tabs are fitted into the respective fitting recesses, the mounting substrate) and the external waveguide substrate are joined together, the two cores are aligned with each other, and the lap joint portion is positioned to overlap the mounting substrate.

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Osaka, Japan

Yutaka Kinugasa