We describe a number of multiplexing techniques which may be used for fibre-optic sensors in which the sensing element is a ring resonator . The basic optical unit comprises a sensing ring resonator connected to a second interrogating ring resonator of nearly equal length, and illuminated by a source of short coherence length. A number of such units may be combined to form an array, using coher...

Significant effort in optical-fibre research has been put in recent years into realizing mode-division multiplexing (MDM) in conjunction with wavelength-division multiplexing (WDM) to enable further scaling of the communication bandwidth per fibre. In contrast, almost all integrated photonics operate exclusively in the single-mode regime. MDM is rarely considered for integrated photonics becaus...

In fiber-optic transmission system, transmission capacity and distance of optical signal are always an important consideration factor to improve the performance of the fiber-optic transmission system. The driving force motivating the use of multichannel optical systems is the enormous bandwidth available in optical fiber. A higher speed signals will be a combination of many lower-speed signals,...

This paper proposes a dynamic bandwidth and bandwidth allocation (DWBA) algorithm for time and wavelength division multiplexing passive optical networks (TWDM PONs). The proposed algorithm saves power by decreasing the number of active wavelengths of a TWDM PON system.

A simple and low-cost synchronized signaling delivery scheme has been proposed for a 60 GHz in-building optical wireless network with 12.7Gbps throughput based on digital frequency division multiplexing and digital Nyquist shaping.

The performance of optical components such as photonic switch, OXC, Optical Amplifiers is degraded by the presence of Non-linear effects in Optical networks. Four-wave Mixing (FWM) is the main deteriorating factor in WDM (Wavelength Division Multiplexing) Optical Network. It is necessary to study the impact of FWM on the performance of WDM networks. In this paper, we study the effects of FWM al...

This paper describes a receiver for Wavelength Division Multiplexed (WDM) optical networks that employs Subcarrier Multiplexing (SCM) techniques to implement the control channels. The control channels operate in the 1 GHz to 2 GHz band.

This paper reviews physical design issues and challenges to meet the basic premise of grooming sub-wavelength capacity traffic in all-optical networks. We discuss technology issues in areas such as all-optical time division Multiplexing, Optical pulse generation, the types of lasers for such pulses, modulators and types of amplifiers, as well as optical timing extraction for high speed optical ...

Optical network based on wavelength-division-multiplexing (WDM) technology will be a most active research topic in the 21st century. This paper describes a WDM multiple-wavelength transmitter and several key corresponding devices for optical network, including ASE spectrum-sliced multiplewavelength optical source, optical add/drop multiplexer (OADM), semiconductor optical amplifier (SOA), as we...