Evaluation of the chirp parameter of aMach-Zehnder intensity modulator

Schiess, M.; Carlden, H.

doi:10.1049/el:19941005

Cited by 44 publications

(7 citation statements)

References 5 publications

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“…Moreover, our proposed systems are tested by changing the chirp factor from 3 to 9. Because the highest value of chirp factor has been experimentally measured at α¼5 [19], most results of our paper are obtained at α¼5.…”

Section: Resultsmentioning

confidence: 97%

“…However, there are many techniques to control the chirping of symmetric MZMs. Changing the voltage biasing is easiest techniques to adjust the chirping of modulators where the chirp factor has been changed from À 4 to 5 [19]. The chirp factor has also been controlled by introducing phase reversal electrode section in tandem with inverted ferroelectric domain section [20].…”

Section: Introductionmentioning

confidence: 99%

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Optical frequency comb generation based on chirping of Mach–Zehnder Modulators

Hmood

Emami

Noordin

et al. 2015

Optics Communications

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Optical frequency comb generation based on chirping of Mach–Zehnder Modulators

Hmood

Emami

Noordin

et al. 2015

Optics Communications

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“…The light wave from an LD is modulated by an oscillating signal at the DMZM. For the DMZM, the chirp parameter is related to the amplitude and the sign of the RF drive signals to each electrode, given by 11,12 …”

Section: Operating Principlementioning

confidence: 99%

Tunable optoelectronic oscillator based on a chirped Mach-Zehnder modulator

Wei¹,

Pan²,

Wang³

et al. 2013

Opt. Eng

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Realization of a wideband tunable optoelectronic oscillator based on a chirped Mach-Zehnder modulator (MZM) and a chirped fiber Bragg grating is proposed and demonstrated. By simply adjusting the direct-current bias of the chirped MZM, the frequency of the oscillating signal is tuned. A theoretical model is established, then verified by an experiment. A high-purity microwave signal with a tunable frequency from 5.8 to 11.8 GHz is generated. The single-sideband phase noise of the generated signal is −112.6 dBc∕Hz at a frequency offset of 10 kHz.

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“…The normalized intensity of the modulator output is independent of the chirp coefficient. The relation (1) [8], a single-drive -cut modulator has a chirp coefficient [9], and an -cut push-pull MZM has zero chirp. Because most external modulators have very large extinction ratios, the expression (1) assumes an infinite extinction ratio.…”

Section: Derivation Of Optical Spectrum Of Binary Signalmentioning

confidence: 99%

Spectrum of Externally Modulated Optical Signals

Kahn

2004

J. Lightwave Technol.

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Abstract-The optical power spectrum of a signal externally modulated using a Mach-Zehnder modulator is calculated analytically. Optical power spectra are calculated for binary signals for which the drive signal has either raised-cosine or Bessel-filtered pulse shape as well as for duobinary signals created by Bessel filtering. While the optical power spectrum is often approximated by the electrical power spectrum of the drive signal, this approximation usually underestimates the spectral spreading of the optical signal. Differences between the optical spectrum and the drive-signal electrical spectrum are most significant for drive signals having longer rise and fall times. Modulator chirp also broadens the optical spectrum. Chirp-induced spectral broadening is more significant for drive signals having longer rise and fall times.

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Evaluation of the chirp parameter of aMach-Zehnder intensity modulator

Cited by 44 publications

References 5 publications

Optical frequency comb generation based on chirping of Mach–Zehnder Modulators

Optical frequency comb generation based on chirping of Mach–Zehnder Modulators

Tunable optoelectronic oscillator based on a chirped Mach-Zehnder modulator

Spectrum of Externally Modulated Optical Signals

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