Fujitsu Optical Components Limited

Tomonori Azuma

Kohei Shibata

Tetsuo Ishizaka

Koji Otsubo

An optical module includes: a first board having an optical component bonded thereto with an adhesive; a connection structure part rising from the first board and made of a material having lower thermal conductivity than thermal conductivity of a material of the first board; and a second board joined to the connection structure part.

Optical module

A wavelength monitoring device includes a polarization rotation element; an etalon element that includes a first double refractive layer and a single refractive layer or a second double refractive layer that is disposed by rotating an optic axis of the second double refractive layer with respect to an optic axis of the first double refractive layer; a polarization separating element that separates an input light, which has the polarization direction rotated and is transmitted through the etalon element, into first light having a polarization direction parallel to the optic axis of the first double refractive layer and second light having a polarization direction perpendicular to the optic axis of the first double refractive layer; a first light receiving device that receives the first light to detect a first monitor value; and a second light receiving device that receives the second light to detect a second monitor value.

Growing community of inventors

Ota, Japan

Tomonori Azuma