In the present paper, optical add drop multiplexers (OADMs) for Ultra Wide Wavelength division multiplexing (UW-WDM) in optical telecommunication ring networks have been modeled and parametrically investigated over wide range of the affecting parameters. Moreover, we have analyzed the flexible configuration changes as well as higher capacity and maximum possible transmission bit rates. Also in ...

We have performed a study on telecommunication systems for a hypothetical mission to Mars. The objective of the study was to evaluate and compare the benefits that microwave—X-band (8.4 GHz) and Ka-band (32 GHz)—and optical communications technologies afford to future missions. The telecommunication systems were required to return data after launch and in orbit at 2.7 AU with daily data volumes...

A surface plasmon resonance sensor for Mycobacterium tuberculosis (MTB) deoxyribonucleic acid (DNA) is developed using repeatable telecommunication wavelength modulation based on optical fiber communications laser wavelength and stability. MTB DNA concentrations of 1 μg/mL and 10 μg/mL were successfully demonstrated to have the same spectral half-width in the dip for optimum coupling. The sensi...

We observe spectral hole burning in a room-temperature optical fiber pumped by a spectrally broadened pump beam. This beam drives the stimulated Brillouin process, creating an inhomogeneously broadened resonance in the material whose shape can be engineered by tailoring the beam's spectrum. A monochromatic saturating beam "burns" a narrow spectral hole that is approximately 10(4) times narrower...

We exploit the properties of ultranarrow, Fano-like resonances generated by the coupling of long range surface plasmons with ultrathin (~10 nm), metallic, subwavelength gratings embedded in a nonlinear, cubic material to obtain all-optical switching at telecommunication wavelengths for extremely low input power. We provide an example of a silver metallic grating embedded in a chalcogenide glass...

Aluminum nitride (AlN) is an appealing nonlinear optical material for on-chip wavelength conversion. Here we report optical frequency comb generation from high-quality-factor AlN microring resonators integrated on silicon substrates. By engineering the waveguide structure to achieve near-zero dispersion at telecommunication wavelengths and optimizing the phase matching for four-wave mixing, fre...

We propose a novel approach for all-optical return-to-zero (RZ) to non-return-to-zero (NRZ) telecommunication data format conversion based on linear spectral phase manipulation of an RZ data signal. The operation principle is numerically analyzed and experimentally validated through successful format conversion of a 640 Gbit/s coherent RZ signal into the equivalent NRZ time-domain data using a ...

IMPROVING STABILITY, STEADY-STATE ERROR PERFORMANCE AND CONVERGENCE RATE IN OPTICAL COMMUNICATION IMPLEMENTING AFS-MDFE USING ADG AND TD ALGORITHM TAREK HASAN-AL-MAHMUD, ASHADUN NOBI, M. ZAMIL SULTAN and M. MAHBUBUR RAHMAN Lecturer, Department of Computer Science and Telecommunication Engineering, Noakhali Science and Technology University. Assistant Professor, Department of Computer Science an...

Electro-absorption from GeSi heterostructures is receiving growing attention as a high performance optical modulator for short distance optical interconnects. Ge incorporation with Si allows strong modulation mechanism using the Franz-Keldysh effect and the quantum-confined Stark effect from bulk and quantum well structures at telecommunication wavelengths. In this review, we discuss the curren...