Ryou Okabe

160 Gbit/s optical 3R-regenerator in a fiber transmission experiment

A fiber-based, wavelength-shift free 3R-regenerating repeater was operated at 160 Gbit/s in a dispersion-managed fiber link for the first time. Error free 160 Gbit/s OTDM transmission over 186 km was demonstrated.

Transparent wavelength conversion at up to 160Gb/s by using supercontinuum generation in a nonlinear fiber

Wavelength conversion by spectral broadening in a normal dispersion fiber is experimentally demonstrated at 40, 80 and 160Gb/s, for the first time, and bit-rate free operation is confirmed. 2R-regenerating capability is also demonstrated at 160Gb/s.

All-optical Amplitude Noise Suppression of 160-Gb/s OOK and DPSK Data Signals Using a Parametric Fiber Switch

We demonstrate the noise limiting performance of a fiber switch based on parametric gain saturation in highly nonlinear fiber. Bit-error-rate measurements were performed at 160 Gb/s for on-off keying (OOK) and differential phase shift keying (DPSK) data signals.

Unrepeated 100 km SMF transmission of 110.3 Gbps/lambda DMT signal

We experimentally demonstrate 110.3 Gbps/lambda DMT transmission over 100 km SMF without chromatic dispersion compensation. Transmission reach extension is achieved by suppression of power fading of chromatic dispersion and nonlinearities using combination of VSB and NLC.

All-optical level equalization of data packets using a fiber-optic parametric amplifier

An ultrafast bit rate and format transparent all-optical packet equalizer is presented, based on fiber-optic parametric amplification. Its equalizing performance is investigated for 43 Gbaud OOK, DPSK and DQPSK signals. The improvement is verified in transmission experiments over 1000km dispersion-managed fiber.

All-optical Amplitude Noise Suppression of 107 Gb/s DPSK Signals Using a Parametric Fiber Switch in a 320 km transmission experiment

An all-optical parametric fiber switch for all-optical amplitude noise suppression was applied mid-span in a 107 Gb/s differential phase shift keying (DPSK) transmission experiment. Using this switch an improved performance after 320 km transmission was achieved.