Direct detection differential polarization-phase-shift...

Direct electrical-to-optical conversion and light modulation...

Direct-detection optical differential 8-level phase shift...

Direct-sequence spread-spectrum...

Directly modulated laser optical transmission system

Directly modulated laser optical transmission system with...

Dispersion compensating circuits for optical transmission...

Dispersion compensation quantity setting method, receiving...

Dispersion compensation quantity setting method, receiving...

Dispersion tolerant optical data transmitter

Dispersion tolerant optical system and method

Distortion compensation circuit including one or more phase...

DQPSK transmitter with parallel precoder and high-speed...

Drive control apparatus and drive control method for optical...

Driver circuit and optical-transmission module

Driver for an optical transmitter

Driving apparatus of a light-emitting device

DSB-SC modulation system capable of erasing carrier and...

Dual-mode fiber optic telecommunications system and method

Duobinary optical transmission apparatus