C- and L-band planar delay Interferometer for DPSK decoders

Gamet, J.; Pandraud, G.

doi:10.1109/lpt.2005.846921

Cited by 11 publications

(7 citation statements)

References 15 publications

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“…We observed shifts staying below 1 GHz also for chip-temperatures up to 70°C. These results are comparable to the best values that have been achieved in other technologies [8]. To the best of our knowledge, such low PDWLshift values are also shown for the first time in SOI waveguide technology.…”

Section: A Cw Filter Characteristicsupporting

confidence: 89%

SOI Delay Interferometer with Tuned Polarization Dependent Wavelength Shift for 40 Gbit/s DPSK Demodulation

Voigt

Zimmermann

Winzer

et al. 2007

2007 4th IEEE International Conference on Group IV Photonics

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Section: A Cw Filter Characteristicsupporting

confidence: 89%

SOI Delay Interferometer with Tuned Polarization Dependent Wavelength Shift for 40 Gbit/s DPSK Demodulation

Voigt

Zimmermann

Winzer

et al. 2007

2007 4th IEEE International Conference on Group IV Photonics

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“…In this paper, we show that using these properties a fivefold gain in bandwidth can be achieved for a directional coupler in silicon. As opposed to previous approaches [7][8][9][10][11][12], our design yields devices with virtually the same length as conventional couplers and its impact on the phase response is marginal.…”

Section: Introductionmentioning

confidence: 98%

“…Several methods have been proposed to enhance the bandwidth of directional couplers. By connecting couplers in a Mach-Zehnder interferometer their responses can be compensated [7][8][9], but at the cost of a considerably larger device. Adiabatic mode conversion couplers achieve broadband operation by using specific, tapered shapes in the coupling region, which, again, increase device size significantly [10,11].…”

Section: Introductionmentioning

confidence: 99%

Colorless directional coupler with dispersion engineered sub-wavelength structure

et al. 2012

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Directional couplers are extensively used devices in integrated optics, but suffer from limited operational wavelength range. Here we use, for the first time, the dispersive properties of sub-wavelength gratings to achieve a fivefold enhancement in the operation bandwidth of a silicon-on-insulator directional coupler. This approach does not compromise the size or the phase response of the device. The sub-wavelength grating based directional coupler we propose covers a 100 nm bandwidth with an imbalance of ≤ 0.6 dB between its outputs, as supported by full 3D FDTD simulations.

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“…We are therefore focusing on a direct detection method for future shortand middle-reach optical networks. Delay line interferometers (DLIs), consisting of free-space optics with a Michelson interferometer [3] or a planar lightwave circuit (PLC) and optical fibers with a Mach-Zehnder interferometer (MZI) [4,5], are widely used for direct detection in M-PSK transmission. All of them are constructed on the basis of controlling the differential length between the two arms.…”

Section: Introductionmentioning

confidence: 99%