Kabushiki Kaisha Toshiba

Toshiba Medical Systems Corporation

Micro Therapeutics, Inc.

Toshiba Home Appliances Corporation

Makoto Murakami

Takahisa Yoneyama

Tadashi Kurokawa

Hiroko Nakano

Masahiko Kitayama

Hideki Maeda

Takamasa Imai

Relay device for radio communication apparatus

Probe for an ultrasonic diagnosis apparatus

It is the objective of the present invention to resolve the limitations on transmission capacity and distance in a system by means of a simple design, through the provision of a means for restraining the deterioration in transmission characteristics that is the result of accumulation over the entire system of third order dispersion in the optical fiber. In the present invention, there is provided an optical fiber transmission path in which positive dispersion fibers,, and,and negative dispersion fibers,(referred to as optical fibers hereinafter), which have at least second and third order dispersion of mutually opposite signs, are combined. In addition, the optical fiber is disposed so that the average third order dispersion value on the transmission path overall is reduced, and so the length of each optical fiber is sufficiently smaller than the square root of the product of the second order dispersion length, which is determined from the second order dispersion value of the optical fiber and the pulse width of the signal, and the non-linear length, which is determined from the average power of the signal within the optical fiber and the optical fiber nonlinear coefficient.

Growing community of inventors

Yokohama, Japan

Makoto Murakami