PLL circuit and optical communication reception apparatus

Polarization duobinary optical transmitter

Power monitoring photo eye controller

Programmable optical vector modulator and method for use in...

Quadrature amplitude modulation of optical carriers

Rate adjustable differential phase shift key (DPSK) modulation

Remodulating channel selectors for WDM optical communication...

Remodulating channel selectors for WDM optical communication...

Return-to-zero (RZ) optical data modulator

Return-to-zero alternative-mark-inversion optical...

RF photonics residual error correction

Sampled analog transmission

Semiconductor electro-absorption optical modulator...

Signal converter, optical transmitter and optical fiber...

Signal emitter for optical fibers

Signal identification in optical communications networks

Single sideband optical transmitter

Snooping countermeasures for system indicators

Spectrally phase encoded optical code division multiple...

Stabilized optical fiber continuum frequency combs using...