Integrated DQPSK transmitter for dispersion-tolerant and dispersion-managed DWDM transmission

Silicon photonics is the guiding of light in a planar arrangement of silicon-based materials to perform various functions. We focus here on the use of silicon photonics to create transmitters and receivers for fiber-optic telecommunications. As the need to squeeze more transmission into a given bandwidth, a given footprint, at a given cost increases, silicon photonics makes more and more economic sense.

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“…The first reported vector modulator was a GaAs PIC, shown in Figure 21 [47]. It consists of two MZMs in a larger interferometer.…”

Section: Metro and Long-reach Picsmentioning

confidence: 99%

Silicon photonic integration in telecommunications

Doerr¹

2015

Front. Phys.

194

113

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“…Typical duty cycles are between 33% and 67%, and are indicated by the percentage numbers in Table 3. Differential quadrature phase shift keying (DQPSK) is either implemented by a cascade of two phase modulators [78] (straight-line or MZM), or by two sub-MZMs nested in a super-MZM [79]. The fact that spectrally narrow formats, in general, yield good dispersion tolerance [80] is reflected by the numbers for Duobinary and DQPSK.…”

Section: Modulation Formats and Modulator Technologymentioning

confidence: 99%

“…The fact that spectrally narrow formats, in general, yield good dispersion tolerance [80] is reflected by the numbers for Duobinary and DQPSK. However, good dispersion tolerance may come at the expense of reduced back-to-back performance (note the higher required OSNR for Duobinary in Table 3) or higher hardware complexity (DQPSK requires more complex transmitters and receivers [79]). These trade-offs show the importance of assessing the dispersion tolerance of a modulation format with a comprehensive view on all the implications associated with it.…”

Section: Modulation Formats and Modulator Technologymentioning

confidence: 99%

Impact of DCF properties on system design

Essiambre¹,

Winzer²,

Grosz

2006

J Optic Comm Rep

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“…This is more advantageous as the intensity passes through the null when changing phase causing a discontinuous phase change, minimizing chirp [5]. Typically, (D)QPSK transmitters use two MZMs to form all four phase states [6], [7]. These typically have an area of exceeding 10 mm 2 [8] and are difficult to integrate with active components such as laser diodes and optical amplifiers.…”

Section: Introductionmentioning

confidence: 99%