Wavelength tunable and broadband variable fiber-optic attenuators using liquid crystals

Sajjad A. Khan; Nabeel A. Riza

doi:10.1117/12.604910

24 May 2005 Wavelength tunable and broadband variable fiber-optic attenuators using liquid crystals

Sajjad A. Khan, Nabeel A. Riza

Proceedings Volume 5814, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications; (2005) https://doi.org/10.1117/12.604910
Event: Defense and Security, 2005, Orlando, Florida, United States

Abstract

Fiber-Optic Variable Optical Attenuators (VOAs) are demonstrated using Liquid Crystals (LC) for broadband as well as wavelength tunable applications. Attenuation is achieved by using a beam spoiling approach implemented via electrically reconfigurable non-pixelated no moving parts Nematic LC deflectors. The VOAs feature in-line architecture and polarization insensitive design without the use of bulky polarization splitting and combining optics. The proof-of-concept VOAs in the 1550 nm band demonstrate >30 dB attenuation ranges, low polarization dependent losses and low power consumption. Applications for these VOAs include agile wavelength tunable secure data communications networks and RF sensor systems.

Citation Download Citation

Sajjad A. Khan and Nabeel A. Riza "Wavelength tunable and broadband variable fiber-optic attenuators using liquid crystals", Proc. SPIE 5814, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications, (24 May 2005); https://doi.org/10.1117/12.604910

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