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| 2. |
- Andrekson, Peter, 1960, et al.
(author)
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Nonlinearity-based all-optical sampling of ultrahigh-bandwidth optical signals
- 2004
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In: Proceedings of SPIE - The International Society for Optical Engineering. - : SPIE. - 0277-786X .- 1996-756X. ; 5596, s. 319-331
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Conference paper (peer-reviewed)abstract
- We demonstrate an all-optical waveform sampling system with simultaneous sub-mW optical signal sensitivity (20 dB SNR) and sub-picosecond temporal resolution over more than 60 nm optical bandwidth. The optical sampling was implemented by four-wave mixing in a 10 m highly nonlinear fiber using a sampling pulse source with a sampling pulse peak power of only 16 W. The sampling performance was evaluated in terms of sensitivity, temporal resolution and optical bandwidth with respect to fiber length, sampling pulse source wavelength offset from the zero-dispersion wavelength of the highly nonlinear fiber, sampling pulse peak power and walk-off due to chromatic dispersion. We also present a summary of the available methods to achieve polarization-independent optical sampling.
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| 5. |
- Gustavsson, Manda, 1976, et al.
(author)
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Uni-travelling-carrier photodiode performance with high optical power 10 Gb/s data
- 2004
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In: OSA Trends in Optics and Photonics. - 1094-5695. ; 95 A, s. 774-776
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Conference paper (peer-reviewed)abstract
- We have fabricated and characterized UTC-PDs and obtained average photocurrents exceeding 80mA and record-high peak-to-peak voltages of 4.8V over 50Ω at 10Gb/s. The UTC-PD is further evaluated in an optically preamplified receiver, providing error-free operation.
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| 7. |
- Hansryd, Jonas, 1972, et al.
(author)
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Impact of PMD on four-wave-mixing-induced crosstalk in WDM systems
- 2000
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In: IEEE Photonics Technology Letters. - : Institute of Electrical and Electronics Engineers (IEEE). - 1041-1135 .- 1941-0174. ; 12:9, s. 1261-1263
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Journal article (peer-reviewed)abstract
- The impact of polarization-mode dispersion (PMD) on four-wave mixing crosstalk in wavelength-division-multiplexed (WDM) fiber systems is quantified on a commercial system. It is found that even a small amount of PMD reduces the benefit of using polarization-multiplexed channels for suppression of crosstalk. As a rule of thumb, it is suggested that polarization-multiplexed schemes are of significant interest only when system differential group-delay (DGD) is smaller than DGD <1/(4Δf), where Δf is the channel-spacing.
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| 8. |
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| 9. |
- Karlsson, Magnus, 1967, et al.
(author)
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Higher order polarization mode dispersion compensator with three degrees of freedom
- 2001
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In: Optical Fiber Communication Conference and International Conference on Quantum Information. - 1557526540
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Conference paper (peer-reviewed)abstract
- We compare several PMD compensation methods, and find that the simple PMD compensator with a variable polarization controller (PC) and a variable time delay line can compensate for not only first, but also higher order PMD.
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