Abstract: The present invention relates to a frequency comb article includes an oscillator; a fiber amplifier; a frequency doubler; a nonlinear fiber; and an interferometer, wherein the fiber amplifier and the nonlinear fiber include a polarization maintaining fiber, and the oscillator, frequency doubler, and interferometer are entirely polarization maintaining.

Abstract: A frequency comb article includes: an oscillator to produce an oscillator frequency comb that includes: a first power; and a first optical bandwidth; a fiber amplifier to receive the oscillator frequency comb from the oscillator and to produce an amplifier frequency comb based on the oscillator frequency comb, the amplifier frequency comb includes: a second power that is greater than the first power; and a second optical bandwidth that is greater than the first optical bandwidth; a nonlinear fiber to receive the amplifier frequency comb from the fiber amplifier and to produce a spectrally broadened frequency comb based on the amplifier frequency comb, the spectrally broadened frequency comb including a third optical bandwidth that is greater than the second optical bandwidth; a frequency doubler to receive the spectrally broadened frequency comb from the nonlinear fiber and to provide a doubled frequency comb including: a plurality of fundamental frequencies from the spectrally broadened frequency comb; and a

Abstract: The invention provides sulfated oxidised regenerated cellulose compounds, sulfated alginates, and the salts and hydrates thereof. The compounds are obtained by sulfation of oxidised regenerated cellulose with sulfur trioxide. The invention also provides pharmaceutical compositions comprising the compounds, in particular compositions for the treatment of medical conditions mediated by a matrix metalloproteinases and anticoagulant pharmaceutical compositions.