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Re: tradero post# 185523

Friday, 03/29/2024 6:36:18 AM

Friday, March 29, 2024 6:36:18 AM

Post# of 191667
Thanks tradero, and this is what "open eyes" means in terms of the quality of performance, from a little searching I did this morning from a non-Lightwave conference paper 2015 titled, "Passive and Electro-Optic Polymer Photonics and InP Electronics Integration"; click on the links below to see the actual images. Cool stuff, and especially the results that Lightwave is producing with their polymers!

Fig 4 (a) Photo of the EO polymer MZM. (b) Transmission response with the DC bias current. (c) The eye-diagram at 100 Gb/s and (d) the optical spectrum at the output of the packaged optical transmitter using the EO polymer MZM. (d) BER measurements at 100 Gb/s [1]. The work point of the MZM is set by injecting current through a section of DC thermal electrode. Similar to passive polymers, the thermal optic effect is slow, with a response time in the millisecond range, but the induced index change per unit voltage is usually much larger than the EO effect. The biasing response is shown in Fig. 4(b). The DC extinction ratio is close to 20 dB. Fig. 4(c) presents the eye-diagrams of the optical signal at 100 Gb/s from the packaged module [1] and Fig. 4(d) displays the optical spectrum centered at 1513 nm at the end of the transmitter. The corresponding NRZ-OOK spectrum has a 0.01-nm resolution. The root mean square (rms) timing jitter is lower than 0.9 ps and the extinction ratio is higher than 13.5 dB. The clearly open eye confirms the enormous bandwidth of the modulator itself but also shows the good performance of the driver-electronics as well as the connecting RF circuits. Fig. 4(e) plots the BER measurements at 100 Gb/s optical signal. No error-floor is present for BER down to 10-10 confirming error-free system operation at this high date rate.



https://www.researchgate.net/publication/275546349_Passive_and_Electro-Optic_Polymer_Photonics_and_InP_Electronics_Integration#pf4

Fig. 4(c) presents the eye-diagrams of the optical signal at 100 Gb/s from the packaged module [1] and Fig. 4(d) displays the optical spectrum centered at 1513 nm at the end of the transmitter. The corresponding NRZ-OOK spectrum has a 0.01-nm resolution. The root mean square (rms) timing jitter is lower than 0.9 ps and the extinction ratio is higher than 13.5 dB. The clearly open eye confirms the enormous bandwidth of the modulator itself but also shows the good performance of the driver-electronics as well as the connecting RF circuits. Fig. 4(e) plots the BER measurements at 100 Gb/s optical signal. No error-floor is present for BER down to 10-10 confirming error-free system operation at this high date rate.



https://www.researchgate.net/publication/275546349_Passive_and_Electro-Optic_Polymer_Photonics_and_InP_Electronics_Integration#pf4

Primary link below that show each of the above images/text for those figures.

https://www.researchgate.net/figure/a-Photo-of-the-EO-polymer-MZM-b-Transmission-response-with-the-DC-bias-current-c_fig4_275546349
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