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We have designed and characterized a novel micromachined variable optical attenuator (VOA) with a silicon optical wedge (SOW). Micromachined VOAs are being studied for effective signal balancing and device protection on a wavelength division multiplexing (WDM) network system. Several micromachined optical attenuators have been introduced using an optical shutter between two optical fibers. This reflective...
Wideband multiwavelength erbium-doped fiber ring lasers with frequency shifted feedback are described. The use of an intra-cavity gain flattening filter (GFF) was proposed in order to increase the lasing spectral bandwidth, leading to a demonstration of 34 lasing wavelengths in 28 nm bandwidth in C-band. The GFF induced spectral output power fluctuation is discussed. Multiwavelength operation was...
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