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| 2. |
- Al-Awis, S. N., et al.
(author)
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Phenomenological formula for modelling of physical layer impairments in elastic optical networks
- 2015
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In: Asia Communications and Photonics Conference, ACPC 2015. - Washington, D.C. : OSA. - 9781943580064
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Conference paper (peer-reviewed)abstract
- An empirical modelling technique is introduced to estimate impact of physical layer impairments in elastic optical networks, which can be used to evaluate transmission quality. The model has been verified experimentally with accuracy beyond (97.3%).
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| 3. |
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| 4. |
- Kakkar, Aditya, et al.
(author)
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Design of coherent optical systems impaired by EEPN
- 2016
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In: 2016 Optical Fiber Communications Conference and Exhibition, OFC 2016. - Washington, D.C. : Institute of Electrical and Electronics Engineers (IEEE). - 9781943580071
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Conference paper (peer-reviewed)abstract
- We present experimental validation of novel analytical expressions essential for the design of coherent optical systems impaired by EEPN. These expressions enable a simple and accurate EEPN analysis for any system specification.
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| 6. |
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| 7. |
- Marinins, Aleksandrs, 1988-, et al.
(author)
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Free carrier absorption modulation in polymer waveguides doped with Si nanocrystals
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Other publication (other academic/artistic)abstract
- This work demonstrates all-optical intensity modulation in integrated optical polymer waveguides doped with Si nanocrystals. The modulation here is based on free carrier absorption of 1550 nm probe signal in Si nanocrystals with excited carriers. Optical 405 nm pump was used to increase free carrier concentration. By applying pulsed pump excitation, -1.55 dB deep intensity modulation was achieved in 5 mm long waveguides. The modulation bandwidth is limited to few kHz due to excited carrier relaxation time (τ ~ 100 μs). Demonstrated all-optical reconfigurable polymer waveguides are a promising potential alternative to thermo-optical switches.
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| 9. |
- Ozolins, O., et al.
(author)
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Cascadability of silicon microring resonators for 40-Gbit/s OOK and DPSK optical signals
- 2012
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In: 2012 Asia Communications and Photonics Conference (ACP). ; , s. 1-3
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Conference paper (peer-reviewed)abstract
- The cascadability of a single silicon micro-ring resonator for CSRZ-OOK and CSRZ-DPSK signals is experimentally demonstrated at 40 Gbit/s for the first time. Error-free performance is obtained for both modulation formats after 5 cascaded resonators.
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| 10. |
- Ozolins, O, et al.
(author)
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High-speed optical interconnects with integrated externally modulated laser
- 2017
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In: Transparent Optical Networks (ICTON), 2017 19th International Conference on. - : Institute of Electrical and Electronics Engineers (IEEE). - 9781538608593 ; , s. 1-1
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Conference paper (peer-reviewed)abstract
- The cloud services together with the huge size datasets are driving demand for bandwidth in datacenters [1]. The 400 Gbps client-side links are demanding cost efficient solution: to reduce the number of lanes and increase the bandwidth for a single lane. The intensity modulation and direct-detection systems together with integrated semiconductor lasers and modulators appear as promising solution in four optical lanes at 100G since it reduces complexity, power consumption and costs [2]. However, it requires silicon and InP opto-electronic components with more than 70 GHz bandwidth [3]. In this talk, we report on a cost-efficient integrated externally modulated laser (EML) with high bandwidth for record high-speed intensity modulation and direct detection system demonstration with up to 100G OOK, PAM4/8 and duobinary signaling, as well as analog modulations e.g. DMT, paving the way for high speed multilevel modulation formats [4–6]. Related techniques including digital signal processing algorithms for timing recovery, adaptive/static equalization are also discussed in terms of practical implementation and complexity. In addition, techniques constructively using time domain super-Nyquist image induced aliasing for mitigating modulator driver nonlinearity for high speed DMT transmission will be presented [6], [7].
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