Nippon Telegraph and Telephone Corporation

Tetsuo Yoshizawa

Yasuyuki Inoue

Yasufumi Yamada

Masayuki Okuno

Kuniharu Kato

Takao Kimura

Fumiaki Hanawa

Toru Maruno

A guided-wave circuit module includes a guided-wave circuit chip having an input waveguide part and an output waveguide part at the ends thereof, a guided-wave circuit part having a predetermined function and positioned between the input waveguide part and the output waveguide part; and a holder for supporting the guided-wave circuit chip, wherein the guided-wave circuit part of the guided-wave circuit chip does not come in contact with the chip holder; at least part of the input and output waveguide parts of the guided-wave circuit chip is fixed to the holder with a fixing agent; and the packaged chip does not have a warp which leads to deterioration of characteristics. A fixing agent having a high hardness is applied to the periphery of the endfaces of the input and output waveguide parts of the guided-wave circuit module and to the periphery of the fiber endfaces of the optical fiber array connected to the module. Therefore, these endfaces can accurately be polished and the waveguide can be connected to the optical fibers at a sufficiently low fiber connection loss and a high return loss.

Guided-wave circuit module and wave-guiding optical component equipped

Growing community of inventors

Mito, Japan

Tetsuo Yoshizawa