Optical DQPSK Receiver With Enhanced Dispersion Tolerance

Lyubomirsky, I.; Chien, Cheng-Chung; Wang, Yi-Hsiang

doi:10.1109/lpt.2008.918216

Cited by 23 publications

(19 citation statements)

References 6 publications

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“…A 10 Gbaud signal with 2 11 PRBS sequences is used as reference. The receiver is made alternatively by a conventional 1 symbol delay double Mach-Zehnder interferometer with balanced detection, a double Gaussian filter with single end detection [7] and a double MRR receiver as in Fig. 1 with four photodetectors with single or balanced detection possible.…”

Section: Integrated Dqpsk Receiver Simulation Resultsmentioning

confidence: 99%

“…6 is shown an equivalent map for the Gaussian filter, but this time as a function of the bandwidth of the filter and the frequency detuning. The detuning and the bandwidth are connected to the baudrate as explained in [7]. For a specific baudrate, within the bandwidth of the PD, it is possible to find an optimum bandwidth and detuning frequency.…”

Section: Integrated Dqpsk Receiver Simulation Resultsmentioning

confidence: 99%

“…An alternative compact scheme offering also increased stability and resilience to chromatic dispersion uses ad-hoc detuned filters [7]. With this scheme optimal demodulation is obtained by using Gaussian filters, nevertheless, ring resonators can also be used as selective phase-to-amplitude converters in view of the implementation of a very compact and integrated version of this scheme which also has a good fabrication tolerance [8].…”

mentioning

confidence: 99%

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A Compact Silicon Photonic DQPSK Receiver Based on Microring Filters

Velha

Faralli

Contestabile

2016

IEEE J. Select. Topics Quantum Electron.

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An extremely compact integrated receiver for DQPSK signals based on two tunable silicon-on-insulator (SOI) microring resonators and four integrated germanium photodetectors is reported. Simulations show the expected performance of the device and how it compares with alternative receivers, i.e., conventional receivers based on delayed Mach-Zehnder interferometers and Gaussian filters based ones. The device, fabricated in a silicon photonic multiuser wafer run, is described and experimentally characterized showing operation for signal ranging from 10 to 20 Gbaud.

show abstract

Section: Integrated Dqpsk Receiver Simulation Resultsmentioning

confidence: 99%

Section: Integrated Dqpsk Receiver Simulation Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

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A Compact Silicon Photonic DQPSK Receiver Based on Microring Filters

Velha

Faralli

Contestabile

2016

IEEE J. Select. Topics Quantum Electron.

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show abstract

“…Polarization division multiplexing (PDM) [12,13], differential quadrature phase-shift keying (DQPSK) [14][15][16][17], and duobinary (DB) [18,19] are the techniques that can be used to increase the bit rate per WDM channel by requiring transmitter and receiver operate at channel baud rate or symbol bit rate. However, they are limited to support only two users per WDM channel.…”

Section: Introductionmentioning

confidence: 99%

40 Gbit/s on-off-keyed system with 5.71 GHz clock recovery circuit using duty cycle division multiplexing

et al. 2009

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Principle of 7 × 5.71 Gbit/s on-off-keyed (OOK) over duty cycle division multiplexing (DCDM) technique is presented. The 40 Gbit/s DCDM signals are then recovered with a receiver operates at 5.71 GHz clock using seven sampling circuits. With seven-user DCDM we show that spectral width of return-to-zero signal can be reduced around 42.8 %. The 40 Gbit/s OOK using DCDM required an optical signal-to-noise ratio of around 31.6 dB and tolerate around 50 ps/nm of chromatic dispersion. In addition, performance of the system is compared against other multiplexing techniques and modulation formats.

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“…Recently, an alternative solution was demonstrated using a specially designed narrow bandwidth (e.g. 60% of modulation frequency) filter with optimal detuning to demodulate and recover both in-phase and quadrature data of the input non-return-to-zero DQPSK (NRZ-DQPSK) signals [2]. This scheme is quite simple but requires ultra-narrow filters with accurate bandwidth and detuning according to the given bit rate, which restricts the application flexibility.…”

Section: Introductionmentioning

confidence: 99%

Simple and flexible optical NRZ-DQPSK demodulation and detection scheme

Zhang

Wang

et al. 2009

SPIE Proceedings

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We propose and demonstrate a simple and flexible all-optical NRZ-DQPSK receiver based on optical detuned filtering. The proposed demodulator is quite flexible to input bit rates, which means it can be used for different bit rates without any change. With two given optical band-pass filters, simulation and comparison show that NRZ-DQPSK signals at 20, 40 and 80Gb/s (10, 20 and 40G symbol rate) can be demodulated to in-phase and quadrature data successfully by adjusting the detuning of two given filters.

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Optical DQPSK Receiver With Enhanced Dispersion Tolerance

Cited by 23 publications

References 6 publications

A Compact Silicon Photonic DQPSK Receiver Based on Microring Filters

A Compact Silicon Photonic DQPSK Receiver Based on Microring Filters

40 Gbit/s on-off-keyed system with 5.71 GHz clock recovery circuit using duty cycle division multiplexing

Simple and flexible optical NRZ-DQPSK demodulation and detection scheme

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