A circuit and associated method for safety shutdown of an optical amplifier, wherein the power of an amplified spontaneous emission ASE is subject to a correction factor and subtracted from a measured signal extracted from the optical signal. After aligning, a string operation can be performed using data having a size larger than the operand size. The color filtering layer is formed on the conductive layer and includes multiple red light filtering sections, multiple green light filtering sections, and multiple blue light filtering sections, and a pixel of a liquid crystal display device includes at least one red light filtering section, at least one green light filtering section and at least one blue light filtering section. In a second aspect, the polymer binding material comprises a hydrophilic acrylic polymer, copolymer, or terpolymer. A folding rigid transom is used to constrain at least two rear margins of the panels when the hull is in the expanded configuration.