High-dynamic-range high-optical-isolation wavelength-sensitive thin film filter-based variable fiber optic attenuator

Sarun Sumriddetchkajorn; Kosom Chaitavon

doi:10.1117/1.2185499

1 March 2006 High-dynamic-range high-optical-isolation wavelength-sensitive thin film filter-based variable fiber optic attenuator

Sarun Sumriddetchkajorn, Kosom Chaitavon

Author Affiliations +

Optical Engineering, Vol. 45, Issue 3, 035004 (March 2006). https://doi.org/10.1117/1.2185499

Abstract

A wavelength-sensitive variable fiber optic attenuator (VFOA) is introduced by incorporating the movable optical mirror with a fixed desired thin film filter (TF) in a compact in-line reflective architecture. Our TF-based wavelength-sensitive VFOA features low component count, high attenuation dynamic range, and high optical isolation. Experimental proof of concept using an off-the-shelf measured 1545.71-nm TF and a mechanically movable mirror shows a 4.64-dB optical loss, and a low polarization-dependent loss of 0.12 dB at the output port. A high optical attenuation dynamic range of >43 dB with a better than 30-dB optical isolation is obtained. Several proposed reflective wavelength-sensitive TF-based VFOAs can also be cascaded to form a low-cost, compact, multiwavelength amplitude controller.

©(2006) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Sarun Sumriddetchkajorn and Kosom Chaitavon "High-dynamic-range high-optical-isolation wavelength-sensitive thin film filter-based variable fiber optic attenuator," Optical Engineering 45(3), 035004 (1 March 2006). https://doi.org/10.1117/1.2185499

Published: 1 March 2006

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