DPSK


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DPSK

(communications)
Differential Phase Shift Keying.

DPSK

(Differential Phase Shift Keying) A common form of phase modulation used in analog modems. DPSK does not require complex demodulation circuitry and is less susceptible to random phase changes in the transmitted waveform. See PSK, FSK and QPSK.
References in periodicals archive ?
The constant intensity downstream DPSK signal is demodulated by a 1-bit delayed interferometer (DI) and balanced photo diodes.
The BER for coherent DPSK demodulation can be calculated as[6]
Zhang, "A novel bidirectional RSOA based WDM-PON with downstream DPSK and upstream re-modulated OOK data", in 11th Int.
Tucker, "Chromatic Dispersion and PMD Mitigation at 10 Gb/s using Viterbi Equalization for DPSK and DQPSK Modulation Formats" Opt.
Started production shipments of its 40G DPSK TFPS MZM for evaluation by large Tier 1 telecom customers;
In the first system for optical signal modulation in all three channels differential binary phase shift keying (DPSK) was used, in the second--the intensity modulation (IM) and in the third--polarization shift keying were used, while the fourth is a combined transmission system, where for the first channels optical signal modulation NRZ DPSK was used, for the second channel--NRZ--OOK and third--2--POLSK.
We have invested in the next generation DPSK module with a focus on reducing the form factor and power consumption for our customers," said Mike Chan, President of Opnext's subsystems business unit and EVP, Business Development & Marketing at Opnext.
Opnext's next generation 40Gbps DPSK line-side module.
OTCBB:GGOX), a leading supplier of high performance electronic and electro-optic components that enable next generation 40G and 100G optical networks, announced that as part of the ongoing productization of its Thin Film Polymer on Silicon (TFPS[TM]) line of Mach-Zehnder Modulators (MZM), that its LX8401 40G DPSK MZMs has successfully passed prequalification assessment with over 1000hrs of Telcordia's GR-468 demanding High Temperature Operating Lifetime (HTOL) testing without degradation in operating performance.
OTCBB:GGOX), a leading supplier of high performance electronic and electro-optic components that enable next generation 40G and 100G optical networks, today announced that it will demonstrate its 40G DPSK Mach-Zehnder Modulator (MZM) and 100G driver at the OFC/NFOEC in Los Angeles, California beginning on March 8, 2011.
One deals with the advanced modulation formats (such as DPSK, QPSK, and QAM) that are increasingly being used for improving spectral efficiency of WDM lightwave systems.
Launched industry first Thin Film Polymer on Silicon (TFPS[TM]) modulator production samples from the Sanmina-SCI production line with the 40G DPSK modulators.