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A study is conducted to numerically analyze the possibility of achieving nanosecond delays, near the band edges of two-dimensional (2-D) photonic crystal waveguides. The results indicated that solution propagation in photonic crystal waveguides might open a new pathway to obtain compact optical delay lines and nonlinear elements in integrated form.

The model studies the soliton-based optical delay lines and derives a continuous wave propagation. It is seen that the delay line can achieve nanosecond delay at a propagation length.

A detailed derivation of the evolution equation of the amplitude of a cavity mode, coupled to a waveguide, starting from Maxwell's equations, is provided by using the reciprocity relations. Results confirm that detuning is estimated in the case of photonic crystal cavity, coupled to a photonic crystal waveguide, showing that it is significant especially, if the structure is used for filtering applications.

The tight binding formalism is applied in the analysis of finite chains of coupled optical cavities of arbitrary length. The analytic results are compared with the numerical results of the plane wave expansion method in the case of a finite two-dimensional photonic crystal chain of coupled resonators and an excellent agreement is observed.

The implication of the variation of the size of the rods is studied by applying coupled mode theory (CMT). CMT can provide a useful insight in the effect of size variations, and unlike other numerical methods such as the finite difference time domain, it neither does nor require excessive computational time.

Passive optical networks (PONs) are being widely considered as a means to implement fiber-to-the-home (FTTH) and deliver broadband access to business and home users. However, technical and consequently regulatory and economic complexities arise in light of their deployment. In this paper, an evaluation of the business prospects of time division multiplexed (TDM) and wavelength division multiplexed (WDM) PON architectures for FTTH deployments under different rollout conditions is performed, based on the ECOSYS techno-economic methodology and tool. The importance of various cost components (fiber installation, optoelectronic components, etc.) is discussed. Using sensitivity analysis, the effect of various parameters such as duct availability, cost of civil works, etc. on the prospects of the investment are investigated. These results reveal several important techno-economic aspects that should be considered by telecom operators, regulators, and policy makers towards a successful FTTH deployment strategy. [ABSTRACT FROM PUBLISHER]