Optical waveguides – With optical coupler – Plural
Patent
1998-12-11
2000-11-07
Ullah, Akm E.
Optical waveguides
With optical coupler
Plural
G02B 628
Patent
active
061447846
ABSTRACT:
The present invention relates to an optical I/O module and light-reflecting device comprising a structure excellent in expandability having a high degree of freedom in designing. The optical I/O module according to the present invention comprises a directional coupler having, at least, input and output ports for constituting a part of a transmission line and an intermediate port for constituting a branch; and a light-reflecting device, optically connected to the intermediate port, for transmitting therethrough a specific wavelength. This structure can realize various configurations which allow a specific wavelength to be dropped from the transmission line and to be added to the transmission line, without influencing the configuration of the transmission line.
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Ishikawa Shinji
Kakui Motoki
Kanamori Hiroo
Nishimura Masayuki
Shigehara Masakazu
Sumitomo Electric Industries Ltd.
Ullah Akm E.
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