Non-sinusoidal optical fiber filters and method of making...

Details Non-sinusoidal optical fiber filters and method of making... Non-sinusoidal optical fiber filters and method of making...

G - Physics

02

B

G02B 6/293 (2006.01) G02B 6/028 (2006.01) G02B 6/255 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2321802

An optical fiber filter with a non-sinusoidal wavelength response is produced by forming an adiabatic taper in a single mode fiber and forming non-adiabatic tapers on slopes at each end of the elongated central region of this adiabatic taper and in the middle of the central region. The non-adiabatic taper in the middle of the central region produces a phase shift in the wavelength response leading to non- sinusoidal filtering characteristics. The filter may be combined with a Mach-Zehnder interferometer to produce a Mach-Zehnder device with a non-sinusoidal wavelength response.

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