The Serrodyne Frequency Translator

Cumming, Raymond C.

doi:10.1109/jrproc.1957.278387

Cited by 69 publications

(16 citation statements)

References 5 publications

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“…We experimentally realize this by electrically driving the electro-optic phase modulator on the path to device A, with a sawtooth waveform. This so-called serrodyne modulation with frequency ω s = ∆Ω m and peak-to-peak phase amplitude of 2π results in an optical frequency shift of ω s [37,38]. We use an arbitrary waveform generator (Agilent 81180A, bandwidth DC to 600 MHz) to generate the sawtooth voltage signal, amplify it with a broadband amplifier (Minicircuits TVA-R5-13A+, bandwidth 0.5 to 1000 MHz) and apply it to the optical phase modulator (Photline MPZ-LN-10-P-P-FA-FA-P, bandwidth DC to 12 GHz).…”

Section: Serrodyne Frequency Shiftingmentioning

confidence: 99%

Remote quantum entanglement between two micromechanical oscillators

Riedinger

Wallucks

Marinković

et al. 2018

Nature

567

450

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Entanglement, an essential feature of quantum theory that allows for inseparable quantum correlations to be shared between distant parties, is a crucial resource for quantum networks . Of particular importance is the ability to distribute entanglement between remote objects that can also serve as quantum memories. This has been previously realized using systems such as warm and cold atomic vapours, individual atoms and ions, and defects in solid-state systems. Practical communication applications require a combination of several advantageous features, such as a particular operating wavelength, high bandwidth and long memory lifetimes. Here we introduce a purely micromachined solid-state platform in the form of chip-based optomechanical resonators made of nanostructured silicon beams. We create and demonstrate entanglement between two micromechanical oscillators across two chips that are separated by 20 centimetres . The entangled quantum state is distributed by an optical field at a designed wavelength near 1,550 nanometres. Therefore, our system can be directly incorporated in a realistic fibre-optic quantum network operating in the conventional optical telecommunication band. Our results are an important step towards the development of large-area quantum networks based on silicon photonics.

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Section: Serrodyne Frequency Shiftingmentioning

confidence: 99%

Remote quantum entanglement between two micromechanical oscillators

Riedinger

Wallucks

Marinković

et al. 2018

Nature

567

450

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“…The amplitude of the photocurrent at the original input microwave signal frequency can also be obtained from (5). It is given by ( ) ( ) Assuming a sawtooth wave has a fall time to period ratio of less than 1%, which can be achieved by a commercial waveform generator.…”

Section:  180mentioning

confidence: 99%

“…Another technique for modifying a microwave signal frequency is called Serrodyne frequency translation [5]. This is based on using a sawtooth wave to phase modulate a microwave signal.…”

Section: Introductionmentioning

confidence: 99%

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Microwave Photonic Frequency Translators With Large Spurious Suppression and Wide Bandwidth

Huang

Chan

2021

IEEE Photonics J.

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Two new photonics-based microwave frequency translators are presented. They are based on Serrodyne modulation to frequency translate an optical carrier, which beats with a microwave signal sideband at a photodetector to generate a frequency translated microwave signal. The proposed frequency translators have a simple structure, a wide bandwidth and a large spurious signal suppression ratio. Experimental results are presented for the novel structures, which demonstrate the realisation of microwave signal frequency translation with >38 dB spurious signal suppression over a wide microwave signal frequency range of 2 to 18 GHz and with >35 dB spurious signal suppression for a translation rate of 500 Hz to 3 MHz. Frequency translation of an 80 MHz bandwidth frequency modulated continuous wave signal at 5.88 GHz frequency with >34 dB spurious signal suppression is also demonstrated.

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“…The main reason relates to the difficulty of generating acoustic waves on the patterned SOI chips. We propose the use of the serrodyne technique on the basis of phase modulators for generating frequency shifts [17,18]. Compared with sinusoidal phase shifting techniques [19], serrodyne frequency shifting (SFS) requires a higher bandwidth for the phase modulator.…”

Section: Introductionmentioning

confidence: 99%