Title :
High-sensitivity 40-gb/s RZ-DPSK with forward error correction
Author :
Spellmeyer, Neal W. ; Gottschalk, Jeffrey C. ; Caplan, David O. ; Stevens, Mark L.
Author_Institution :
Lincoln Lab., Massachusetts Inst. of Technol., Lexington, MA, USA
fDate :
6/1/2004 12:00:00 AM
Abstract :
A high-sensitivity 40-Gb/s differential-phase-shift-keyed (DPSK) system with coding is demonstrated with back-to-back sensitivity as good as 8.7 photons per bit at a 10-9 bit-error rate. Coding is done on the 40-Gb/s data using high-speed electrical multiplexers and demultiplexers combined with four 10-Gb/s forward error correction chips that operate with 7% overhead. The DPSK receiver uses a simple approach to DPSK balanced detection.
Keywords :
demultiplexing equipment; differential phase shift keying; encoding; error statistics; forward error correction; multiplexing equipment; optical fibre communication; optical modulation; optical receivers; 40 Gbit/s; DPSK receiver; RZ-DPSK; bit-error rate; coding; demultiplexers; differential-phase shift-keying; forward error correction; high-speed electrical multiplexers; Band pass filters; Bit error rate; Differential quadrature phase shift keying; Forward error correction; High speed optical techniques; Optical attenuators; Optical fiber communication; Optical fiber polarization; Optical receivers; Tunable circuits and devices;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2004.827417
