Omron Corporation

Toshinari Mori

Keisuke Yano

Hayami Hosokawa

Yukari Terakawa

Keisuke Arita

Yoshiyuki Komura

Kazuyuki Hayamizu

Light of wavelengths &#x3bb;and &#x3bb;(&#x3bb;) is propagated in a first core. The light emitted form the first core is divided at a filter. That is, the light of the wavelength &#x3bb;transmits through the filter and is made incident onto a third core while the light of the wavelength &#x3bb;is reflected from a filter and is made incident onto a second core. The second core has a sectional area which works in a single mode for the light of the wavelength &#x3bb;and works in a multiple mode for the light of the wavelength &#x3bb;. It is therefore possible to prevent noise or stray light in an optical multiplexer/demultiplexer.

Optical multiplexer/demultiplexer

In an optical waveguide device, a rectangle, which uses a filter insertion groove as its diagonal line and uses points on filter insertion grooves adjacent to the above filter insertion groove as its apexes, is assumed as a unit rectangle, and the size of the optical waveguide device is set to an integer multiple of the unit rectangle. In this case, even if filter insertion grooves are formed in a state in which a plurality of the optical waveguide devices are disposed in matrix, the respective optical waveguide devices can be formed in the same shape. Further, the filter insertion grooves formed to the respective optical waveguide devices do not divide portions other than the target portion of other optical waveguide devices. Therefore, the manufacturing processes of the optical waveguide device can be simplified and are suitable for mass production, and manufacturing cost can be suppressed thereby.

Method for manufacturing optical waveguide and optical waveguide device, optical waveguide device and optical waveguide, and optical communication apparatus using optical waveguide device

Relay socket

Terminal socket

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Nara, Japan

Toshinari Mori