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

Fiber optics

Signal attenuation

Free space optics

Collimators

Optical testing

High dynamic range imaging

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