Browdy and Neimark, P.L.L.C.
Adaptive dispersion compensating element
An object of the present invention is to provide a device that performs dispersive compensation in an optical fiber transmission path, such as performing waveform shaping in optical fiber transmission. This adaptive dispersion compensating element is provided with a chirp Bragg grating 104 formed in an optical fiber, a temperature gradient impressing means 105 that impresses a temperature gradient along the longitudinal direction of the chirp Bragg grating, a spectral resolving means 106 that spectrally resolves the output light from the chirp Bragg grating, a detecting means 107 that detects the output light from the spectral resolving means, and a control means 108 that performs feedback control of the temperature gradient impressing means based on the output from the detecting means and provides a compact and high-stability device that performs the dispersive compensation in the optical fiber transmission path, such as performing the waveform shaping in the optical fiber transmission.
Matsushita Electric Industrial Co., Ltd.
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Shinichi Yoshinori
Wakabayashi Takeuchi