Sumitomo Electric Industries, Limited

Lance Thompson

Phillip J Edwards

Nhan Huynh

Jignesh H Shah

Toshimitsu Kaneko

Chie Fukuda

A wavelength monitor monolithically integrated with a tunable LD is disclosed. The wavelength monitor includes at least two filters, each filter having a different periodic transmission spectrum. A transmittance of the first filter, and another transmittance of the second filter at a grid wavelength attributed to a WDM system forms a combination which is specific to the grid wavelength but different from other combinations at other grid wavelengths.

Wavelength monitor, wavelength lockable laser diode and method for locking emission wavelength of laser diode

An optical transceiver that reduces the EMI noise leaked therefrom is disclosed. The optical transceiver provides a metal housing, an optical subassembly, and an electronic circuit. The metal housing includes a first space to install the electronic circuit, and a second space to install the optical subassembly. At least the first space has inner surfaces having a corrugated shape to reduce the resonance of the electromagnetic waves.

Optical transceiver having corrugated inner side surfaces

An optical transceiver that reduces the EMI noise leaked therefrom is reduced is disclosed. The optical transceiver of the invention provides a metal housing, an optical subassembly, and an electronic circuit. The metal housing includes a first space that installs the electronic circuit and a second space that installs the optical subassembly. The first space and the second space are electrically shielded to each other, in addition that both spaces are shielded from the external. In the optical transceiver of the invention, even the second space provides the optical path to the optical connector, which becomes a definite leak path for the EMI noise, the leakage from the first space to the external through the optical path is prevented.

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San Jose, CA, United States of America

Lance Thompson