Title :
Wide-band symmetrical analog multiplier IC for coherent optical-fiber receivers operating up to 10 Gb/s
Author :
Rein, Hans-Martin ; Schmidt, Lothar ; Wörner, Klaus ; Pieper, Wilhelm
Author_Institution :
Ruhr-Univ. Bochum, Germany
fDate :
12/1/1991 12:00:00 AM
Abstract :
A versatile analog four-quadrant multiplier IC with large bandwidth (DC to 6 GHz and 10 Gb/s) and large dynamic range is presented. It was mainly developed for differential-phase-shift-keying (DPSK) phase demodulator and polarization diversity receivers in coherent optical-fiber transmission systems. The circuit consumes 450 mW and only needs a single power supply of -5 V. The circuit principle used allows exact symmetry with respect to both linear inputs, which reduced multiplication errors. In the intended application, especially, the time jitter and the offset voltage of the output pulse patterns are reduced to negligible values. The IC was realized in a 1.25-μm double-polysilicon bipolar technology
Keywords :
analogue circuits; bipolar integrated circuits; multiplying circuits; optical communication equipment; receivers; -5 V; 0 to 6 GHz; 1.25 micron; 450 mW; DPSK; analog multiplier IC; broadband; coherent optical-fiber receivers; differential-phase-shift-keying; double-polysilicon bipolar technology; four-quadrant multiplier; offset voltage; phase demodulator; polarization diversity receivers; single power supply; time jitter; wideband symmetrical type; Analog integrated circuits; Bandwidth; Demodulation; Differential quadrature phase shift keying; Dynamic range; Jitter; Optical polarization; Optical receivers; Power supplies; Wideband;
Journal_Title :
Solid-State Circuits, IEEE Journal of
