Optical interconnection networks have the potential for achieving low latency and high throughput. Moreover , the high bandwidth of an optical link can be shared by many virtual channels through the use of either multiple wavelengths or multiple time slots. In this paper, routing algorithms are studied for mesh-like ar-chitectures with path-multiplexed or link-multiplexed communications. Determ...

We demonstrate distribution of a 2850 MHz rf signal over stabilized optical fiber links. For a 2.2 km link we measure an rms drift of 19.4 fs over 60 h, and for a 200 m link an rms drift of 8.4 fs over 20 h. The rf signals are transmitted as amplitude modulation on a continuous optical carrier. Variations in the delay length are sensed using heterodyne interferometry and used to correct the rf ...

Deflection Routing is proposed for all optical core switches because of the lack of optical memory. In Shortest-path Deflection Routing, switches attempt to forward packets along a shortest hop path to their destinations. Each link can send a finite number of packets per time-slot (the link capacity). Incoming packets have to be sent immediately to their next switch along the path. If the numbe...

In order to meet the ever increasing demand for larger transmission bandwidth, Wireless network based on radio-over-fiber technologies is a very beneficial solution. Various disadvantages of Analog Radio over Fiber link such as non-linearity, chromatic Dispersion can be mitigated by use of Digital Radio over Fiber link. A digitized RF-over-Fiber transmission scheme based on Bandpass Sampling th...

Internet is powered by the world wide optical network and hence, survivability of optical network is extremely important. Sometimes, the protection for the two failed links interfere with each other and as a consequence only one failure can be protected. In a large optical network, failure probability of two links with overlapping protection can be high, as these links will be very likely geogr...

We present theoretical predictions and experimental measurements for the achievable phase noise, timing jitter, and frequency stability in the coherent transport of an optical frequency over a fiber-optic link. Both technical and fundamental limitations to the coherent transfer are discussed. Measurements of the coherent transfer of an optical carrier over links ranging from 38 to 251 km demons...

Optical wireless communications in the outdoor is capable of providing a broadband last mile access, and in the indoor environment it can be used to provide flexible interconnection through wireless distributed data communication systems to connect PCs, digital assistants, laptops, printers, digital cameras in offices, shopping areas, warehouses and manufacturing floors. Optical wireless commun...

Free Space Optical (FSO) communication is a very recent and emerging technology to establish broadband wireless data transmission system using modulated optical beams. The adoption of FSO system is mainly needed when any physical connection between the transmitter and receiver is practically impossible and where high bandwidth data transmission is expected. The performance of FSO communication ...

Free Space Optics (FSO) is now a well established access technology, better known for its robustness in transmitting large data volumes in an energy efficient manner. However the BER performance of a FSO ground-link is adversely affected by cloud coverage, harsh weather conditions, and atmospheric turbulence. Fog, clouds and dry snow play a detrimental role by attenuating optical energy transmi...

The BER and the availability belong among the basic qualitative parameters of free space optical (FSO) links. The BER parameter is usually mentioned by FSO manufacturers, but it is not defined what conditions a certain value of BER stands for. This article deals with problems of measuring the BER of free space optical link and with questions how to determine the probability of unavailability of...