Wavelength-flattened directional couplers for mirror-symmetric interferometers

In the context of guided optics, the authors derive, analytically and geometrically, a rigorous general criterion to design wavelength-insensitive interferometers with mirror symmetry, which are needed for wavelength multiplexing/demultiplexing. The criterion is applied to a practical case, resulting in an interferometer that works on a band wider than 70 nm.

[1]  K. Jinguji,et al.  Mach-Zehnder interferometer type optical waveguide coupler with wavelength-flattened coupling ratio , 1990 .

[2]  L. Eldada,et al.  Integrated multichannel OADMs using polymer Bragg grating MZIs , 1998, IEEE Photonics Technology Letters.

[3]  Tsutomu Kitoh,et al.  Two-port optical wavelength circuits composed of cascaded Mach-Zehnder interferometers with point-symmetrical configurations , 1996 .

[4]  Matteo Cherchi.  Wavelength-flattened directional couplers: a geometrical approach. , 2003, Applied optics.

[5]  N. Frigo,et al.  A generalized geometrical representation of coupled mode theory , 1986 .

[6]  K. Morishita,et al.  Wavelength-insensitive couplers in form of all-fibre Mach-Zehnder interferometer , 1991 .

[7]  Akihiro Takagi,et al.  Broadband silica-based optical waveguide coupler with asymmetric structure , 1990 .

[8]  S Lacroix,et al.  Wavelength-flattened 2 x 2 splitters made of identical single-mode fibers. , 1991, Optics letters.

[9]  H. Jones,et al.  Groups, representations, and physics , 1990 .

[10]  T A Strasser,et al.  Integrated-optical Mach-Zehnder add-drop filter fabricated by a single UV-induced grating exposure. , 1997, Applied optics.

[11]  B. Little,et al.  Design rules for maximally flat wavelength-insensitive optical power dividers using Mach-Zehnder structures , 1997, IEEE Photonics Technology Letters.

[12]  K. Jinguji,et al.  Silica-based waveguide-type wavelength-insensitive couplers (WINC's) with series-tapered coupling structure , 1992 .

[13]  A. Yariv,et al.  Wavelength-insensitive nonadiabatic mode evolution couplers , 2004, IEEE Photonics Technology Letters.

[14]  Kenneth O. Hill,et al.  New design concept for a narrowband wavelength-selective optical tap and combiner , 1987 .

[15]  R Ulrich,et al.  Representation of codirectional coupled waves. , 1977, Optics letters.

[16]  Steven K. Korotky,et al.  Three-space representation of phase-mismatch switching in coupled two-state optical systems , 1986 .