A low-cost, compact 5-Gbps fully integrated CMOS optical receiver without equalizer is fabricated in this paper in a standard 0.18-μm CMOS technology. The measured responsivity of the DNW-strip-SMPD operating in avalanche mode is 1.4A/W, while the bandwidth is 2.9GHz with 11.6V reverse bias voltage. The application for 5-Gbps very-short-reach optoelectronic integrated circuit (OEIC) receiver wi...

The objective of this work is to design optimal codes for a 2 Dimensional Optical Code Division Multiple Access system (2D-OCDMA), and to test their robustness to noise perturbation. 2D coding is performed by Multi-Wavelength Optical Orthogonal Codes (MWOOC). They are obtained with our new construction method which permits to choose the code parameters with high flexibility. Different receiver ...

In free-space optical communication links, atmospheric turbulence causes fluctuations in both the intensity and the phase of received light signal, impairing link performance. In this paper, we describe several communication techniques to mitigate turbulence-induced intensity fluctuations, that is signal fading. These techniques are applicable in the regime in which the receiver aperture is sma...

We report a fully integrated serial-link receiver with optical interface fabricated with a 0.18 mm complementary metal oxide semiconductor technology for long-haul display interconnects. The receiver includes a trans-impedance amplifier, a limiting amplifier, a clock and data recovery circuit, 1:64 de-multiplexer and a built-in error checker. The receiver produces 64-bit wide electrical signals...

All optical method is considered as a promising technique for high symbol rate Nyquist signal generation, which has attracted a lot of research interests for high spectral-efficiency and high-capacity optical communication system. In this paper, we extend our previous work and report the fully experimental demonstration of polarization-division multiplexed (PDM) all-optical Nyquist signal gener...

Existence of line of sight (LOS) and perfect alignment between the communicating modules is one of the key requirements for free space optical communication. To ensure uninterrupted data flow, auto-aligning transmitter and receiver modules are necessary. We propose a new approach based on spherically shaped transmitter and receiver modules (optical antenna) for maintaining optical links even wh...

The effect of optical irradiance on the linearity of a Si photodiode was studied. These results are compared for light modulated at 30 MHz and at dc as the optical irradiance was varied over a 9 decade range. We discuss how these results affect the use of this detector as a heterodyne receiver. As the optical irradiance varied from 10-2 to 10+3 mW/cm2, while maintaining constant total power, th...

To provide a safe and reliable technique for rotor blade inspection, the lightning damages caused by any metal equipment inserted into the blade have to be eliminated. This paper, therefore, deals with an approach that consequently avoids any metal cables by applying optical fibers both for data communication as well as for the power supply. The used sensor network is specialized in acoustic em...

A non-coherent synchronous optical fiber code-division multiple-access (CDMA) network is proposed. In this network, sequence-inversion keying (SIK) of intensity modulated unipolar balanced Walsh code sequences is employed, whereby a code sequence is transmitted for each data ‘1’ bit while the logical complement of that sequence is transmitted for each data ‘0’ bit. At the receiver the received ...