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Vienna, Austria

Atef M.,Vienna University of Technology | Swoboda R.,A3PICs GmbH | Zimmermann H.,Vienna University of Technology
IEEE Photonics Technology Letters | Year: 2012

A real-time 1.25-Gb/s transmission over a 50-m step-index plastic optical fiber (SI-POF) with -12.5-dBm sensitivity at bit error rate equal to 10 -9 was achieved. The binary modulated signal was received and post-equalized using a fully integrated optical receiver. A green edge-emitting laser diode with 520 nm is used, which gives a lower attenuation over POF compared to the traditional 650-nm red laser. The launched optical power is 1 dBm, which ensures eye-safety (class 1 M) with 6-dB power margin. © 2012 IEEE. Source


Atef M.,Vienna University of Technology | Swoboda R.,A3PICs GmbH | Zimmermann H.,Vienna University of Technology
Optics Communications | Year: 2010

An optical receiver with high sensitivity and linearity specially designed for Giga-bit communications over small-bandwidth high-attenuation multimode plastic optical fiber is presented. An automatic gain control transimpedance amplifier and linear post amplifiers are used to maintain a good performance with multilevel modulation. Using multilevel signaling and large-diameter integrated photodiodes make the presented optical receiver suitable for large core plastic optical fiber. For a wavelength of 675 nm, a sensitivity of -26.3 dB m (BER = 10-9) at 500 Mb/s is presented by a binary signal. A data rate of 1 Gb/s and a sensitivity of -19.8 dB m (BER = 10-9) are achieved with four-level pulse amplitude modulation. © 2009 Elsevier B.V. All rights reserved. Source


Atef M.,Vienna University of Technology | Swoboda R.,A3PICs GmbH | Zimmermann H.,Vienna University of Technology
Optics Communications | Year: 2010

An optical receiver with automatic-gain-control transimpedance amplifier, linear post amplifier and linear line driver suitable for multilevel signals is presented. A large-diameter photodiode (400 μm) with an antireflection coating optimized for red light was integrated. These features enable the presented optical receiver to be a promising plastic optical fiber receiver. An error free (<10-8) 400 Mbit/s data rate over 50 m PMMA-step index plastic optical fiber (1 mm diameter) is achieved with eight-level pulse amplitude modulation (8-PAM). © 2010 Elsevier B.V. All rights reserved. Source


Atef M.,Vienna University of Technology | Gaberl W.,Vienna University of Technology | Swoboda R.,A3PICs GmbH | Zimmermann H.,Vienna University of Technology
Analog Integrated Circuits and Signal Processing | Year: 2011

A BiCMOS integrated optical receiver with high sensitivity and good linearity is presented. An automatic gain control transimpedance amplifier (TIA) and linear post amplifiers are used to maintain a high linearity with multilevel modulation. Using multilevel signaling and large-diameter integrated photodiodes make the presented optical receiver suitable for small-bandwidth high-attenuation large-core PMMA step index plastic optical fiber. A measured sensitivity of -31 dBm (BER = 10-9) at 250 Mb/s is presented for a binary signal. A data rate of 500 Mb/s and a sensitivity of -25 dBm (BER = 10-9) are achieved with four-level pulse amplitude modulation (4-PAM). An error-free transmission over 40 m PMMA step index plastic optical fiber was achieved at 500 Mb/s using 4-PAM signaling with the presented multilevel optical receiver. © 2010 Springer Science+Business Media, LLC. Source


Atef M.,Vienna University of Technology | Swoboda R.,A3PICs GmbH | Zimmermann H.,Vienna University of Technology
Optics Communications | Year: 2011

An optical receiver having a high linearity is used for multilevel communication over standard step plastic optical fiber. A large-diameter photodiode with an antireflection coating optimized for red light was integrated. These features enable the used optical receiver to be a promising plastic optical fiber receiver. An error free (< 10-8) 170 Mb/s data rate over 115 m standard PMMA step-index plastic optical fiber is achieved with four-level and eight-level pulse amplitude modulation. © 2010 Elsevier B.V. All rights reserved. Source

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