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This work discusses visible light laser voltage probing (VIS-LVP) and gallium phosphide solid immersion lens (GaP SIL) research for Integrated Circuit (IC) analysis at Technische Universität Berlin. An overview of the challenges in connection with the ultra-precision fabrication of GaP SILs and their application is given. The use of visible light is not only opening a path for fault isolation in small...
A real-time 56-GBaud PAM-4 serial optical transmission link over 2km SSMF is presented using in-house developed SiGe PAM-4 driver and clock-and-data recovery integrated circuits demonstrating BER values down to 2e-7.
Being the 5th Position and sweetest language in the world declared by the UNESCO Bengali is the national language in Bangladesh and one of the major languages in India. Lot of researches has been done to recognize Bengali, English and other major languages using Optical Character Recognition (OCR). To recognize Bengali character from text images and convert into editable text, Self Organizing Map...
We developed a 25-Gb/s VCSEL transmitter with 10-Gb/s VCSEL. By driving standard 10-Gb/s VCSELs using pre-emphasis technology to overcome their optical bandwidth limit, we achieved clear eye opening at 25 Gb/s.
To realize the high throughput performance in the optical wireless communications effectively, a Repeated-permutation Multi-pulse Pulse Position Modulation (RMPPM) system with interference avoidance and cancellation is considered. The RMPPM system can transmit the bit data using the repeated-permutation of the slot positions and several orthogonal codes. The RMPPM system can improve the throughput...
We demonstrate a novel 10G-EPON dual-rate CDR using single 82.5 GS/s sampling IC and dual-rate decision logic that achieves rapid burst-mode lock time of 37 ns at 10.3 Gbps in BER=10-3 and of 64 ns at 1.25 Gbps in BER=10-12 via dynamically phase and bit-rate varied optical packets.
We developed 10 Gbps burst-mode clock recovery IC with synchronization time of 50 ps. Using the IC with PIN-TIA PDs, an optical packet receiver which requires no preamble is also developed.
The integrated circuits photo masks diagnostics in the automated optical inspection system is developed. This low error probability system based in application of hyperbolic wavelet transforming and photo masks fiducial geometric moment features. The experimental results proved the high noise stability property, which allows reducing lighting apparatus and high precision mechanism conditions.
Recent intensive studies by scanning probe microscope (SPM) on the recording and detection of extremely minute bit patterns have assumed increasing importance in the field of magnetic recording, because the sharp magnetic tip of the SPM can be used as a kind of micro-manipulator of magnetic domains. This paper investigates submicron magnetic bit recording and detection, in which the tip of a magnetic...
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