| 1. |
- Szczerba, Krzysztof, 1985, et al.
(författare)
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30 Gbps 4-PAM transmission over 200m of MMF using an 850 nm VCSEL
- 2011
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Ingår i: Optics Express. - 1094-4087 .- 1094-4087. ; 19:26, s. B203-B208
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Tidskriftsartikel (refereegranskat)abstract
- We present high speed real time, error free 4-PAMtransmissionfor short range optical links based on a VCSEL operating at 850 nm, a multimode fibre and a simple intensity detector. Transmission speeds of 25 Gbps and 30 Gbps are demonstrated, and the maximum fibre reaches were 300 m and 200 m, respectively. The 4-PAM is also compared with OOK transmission at 25 Gbps, and we find that at this bit rate 4-PAM increases the error free transmission distance in the multimode fibre by 100 m, compared to OOK.
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| 2. |
- Szczerba, Krzysztof, 1985, et al.
(författare)
-
30 Gbps 4-PAM transmission over 200m of MMF using an 850 nm VCSEL
- 2011
-
Ingår i: European Conference and Exposition on Optical Communications, ECOC. - 2162-2701. - 9781557529312 ; , s. 1-3
-
Konferensbidrag (refereegranskat)abstract
- Real time, error free 4-PAM transmission at 25 Gbps and 30 Gbps over 300 m and200m of multimode fiber, respectively, using a VCSEL operating at the wavelength of 850 nm.
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| 3. |
- Szczerba, Krzysztof, 1985, et al.
(författare)
-
Demonstration of 8-level subcarrier modulation sensitivity improvement in an IM/DD system
- 2011
-
Ingår i: European Conference and Exposition on Optical Communications, ECOC. - Washington, D.C. : OSA. - 2162-2701. - 9781557529312 - 9781557529312
-
Konferensbidrag (refereegranskat)abstract
- We experimentally demonstrate up to 2 dB sensitivity improvement for 8-levelsubcarrier modulation compared to conventional 8-level subcarrier modulation.
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| 4. |
- Szczerba, Krzysztof, 1985, et al.
(författare)
-
Experimental comparison of modulation formats in IM/DD links
- 2011
-
Ingår i: Optics Express. - 1094-4087 .- 1094-4087. ; 19:10, s. 9881-9889
-
Tidskriftsartikel (refereegranskat)abstract
- We present an experimental comparison of modulation formatsfor optical intensity modulated links with direct detection. Specifically, wecompare OOK, QPSK on an electrical subcarrier and a new modulationformat named OOPSK. The OOPSK modulation format is shown to havebetter sensitivity than the other modulation formats, in agreement withtheoretical predictions. The impact of propagation in multimode fiber isalso studied and the results show that all modulation formats have similarsensitivity penalties, with respect to the fibre length.
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