Dynamics of the chirped return-to-zero modulation format

Mu, R.-M.; Tian, Yu; Grigoryan, V.S.; Menyuk, Curtis R.

doi:10.1109/50.974817

Cited by 43 publications

(13 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…NRZ is easier to implement, while RZ offers improved receiver sensitivity and tolerance to inter-symbol interference (ISI). NRZ-OOK has a few variants such as chirp-free NRZ-OOK (the most common type), chirped NRZ-OOK [20,66], and duobinary [68]. RZ pulse formats also have several variants, such as chirp-free RZ, chirped RZ (CRZ), CSRZ [35], and p/2 alternate-phase (p/2-AP) RZ [26].…”

Section: Optical Modulation Formatsmentioning

confidence: 98%

Optical technologies and techniques for high bit rate fiber transmission

Liu¹,

Gill²,

Chandrasekhar³

2006

Bell Labs Tech. J.

View full text Add to dashboard Cite

reduces the operational expenditure (OpEx) of such networks. Thirdly, high spectral efficiency (SE) can be achieved in a WDM system that has a common channel grid through the use of high bit rate channels. Improving spectral utilization facilitates increased overall system capacity and lower overall cost.In this paper, we review the advances in selected optical technologies and techniques for high bit rate fiber transmission. We describe optical terminal technologies and techniques for high bit rate transmission, including optical modulation formats and their corresponding transmitter and receiver designs. A comparison among different modulation formats, having amplitude and/or phase modulation, will be given. Also discussed are optical and electronic equalization techniques at the optical terminals, and forward error correction (FEC). We next review advances in optical repeaters, including optical amplifiers and dispersion compensators. Broadband Raman amplification and nonlinearity management will also be discussed. We follow by examining link design issues such as the

show abstract

Section: Optical Modulation Formatsmentioning

confidence: 98%

Optical technologies and techniques for high bit rate fiber transmission

Liu¹,

Gill²,

Chandrasekhar³

2006

Bell Labs Tech. J.

View full text Add to dashboard Cite

show abstract

“…However, the phase varies within the time span of each pulse, and hence the spectrum is significantly broader. Although the chirp of the pulses can be used to counteract fiber dispersion [5], it generally leads to increased cross-talk penalty and lower overall performance.…”

Section: Chirped Rz (Crz)mentioning

confidence: 99%

Advanced modulation formats for fiber optic communication systems

Mauro

Raghavan

2008

Sci Model Simul

View full text Add to dashboard Cite

Choice of modulation format plays a critical role in the design and performance of fiber optic communication systems. We discuss the basic physics of electro-optic phase and amplitude modulation and derive model transfer functions for ideal and non-ideal Mach-Zehnder modulators. We describe the generation and characteristics of the standard nonreturn-to-zero (NRZ) modulation format, as well as advanced formats such as returnto-zero (RZ), carrier-suppressed RZ (CSRZ), duobinary, modified duobinary, differential phase-shift keyed (DPSK), and return-to-zero DPSK (RZ-DPSK). Finally, we discuss the relative merits of these formats with respect to a variety of system impairments.

show abstract

“…Numerically, the performance of dispersion-managed 40 Gbit/s TDM-transmission systems over the already installed standard fiber has been analyzed in simulations assuming conventional NRZ and RZ-modulation format with different duty ratios. It is shown that for 40 Gbps TDM-systems, RZ-modulation format with a duty cycle of 0.5 is inherently superior to the conventional NRZ-transmission scheme [24].…”

Section: Introductionmentioning

confidence: 99%