[OPTICAL REVIEW Vol. 5, No. 4 (1998) 226-233]

Dispersion-Compensation Device with Waveguide Grating Routers

Yong LEE

Central Research Laboratory, Hitachi, Ltd., 1-280 Higashi-Koigakubo, Kokubunji, Tokyo, 185-8601 Japan

(Received February 26, 1998; Accepted June 8, 1998)

A compact transmissive waveguide-type dispersion compensation device that uses waveguide grating routers is proposed. This device provides dispersion compensation in long-haul fiber transmission lines and can also be used as a pulse compressor for ultrashort optical pulse generation. A device for the pulse compression of picosecond-length optical pulses has been designed and is numerically analyzed. The proposed device works as a compact (on the centimeter order) and transmissive pulse compressor for picosecond optical pulses.

Key words : group-velocity dispersion, dispersion-compensation, pulse compression, pulse reshaping, waveguide grating router, array waveguides