Properties of a novel noncascaded type, easy-to-design, ripple-free optical bandpass filter

The chief principle and properties of a novel noncascaded type optical bandpass filter with three unique general characteristics are presented. This device is based on a combination of a Michelson interferometer and a Gires-Tournois resonator (GTR). First, the filter has square-like frequency response with zero ripple, wide flat-top (0.74/spl times/bandwidth), unity contrast, sharp steepness, and infinite rejection ratio when GTR front surface mirror reflectance /spl rho/ is equal to one-third. Second, this filter possesses variable bandwidth and center wavelength tunability features with simple control mechanism and nanosecond temporal response potential. Third, the desired features of the filter can be synthesized easily by mere inspection since only three parameters are required, and their expressions are given in simple analytic forms. Numerical results showing these features are presented and other characteristics are briefly discussed.

[1]  J. Minowa,et al.  Dielectric multilayer thin-film filters for WDM transmission systems , 1983 .

[2]  M. Adams,et al.  Optical waves in crystals , 1984, IEEE Journal of Quantum Electronics.

[3]  H. Stadt,et al.  Multimirror Fabry–Perot interferometers , 1985 .

[4]  Eric M. Dowling,et al.  Lightwave lattice filters for optically multiplexed communication systems , 1994 .

[5]  Proposal for acousto-optic tunable filters with near-ideal bandpass characteristics. , 1994, Applied optics.

[6]  Le Nguyen Binh,et al.  Novel realization of monotonic Butterworth-type lowpass, highpass, and bandpass optical filters using phase-modulated fiber-optic interferometers and ring resonators , 1994 .

[7]  G. H. Song.  Toward the ideal codirectional Bragg filter with an acousto-optic-filter design , 1995 .

[8]  A. d'Alessandro,et al.  A passband-flattened acousto-optic filter , 1995, IEEE Photonics Technology Letters.

[9]  Mohammad H. Rahnavard,et al.  Optimum bandpass optical filter synthesis using periodic corrugated waveguides with /spl pi//2 phase shifts , 1995 .

[10]  Christi K. Madsen,et al.  A general planar waveguide autoregressive optical filter , 1996 .

[11]  Mk Meint Smit,et al.  PHASAR-based WDM-devices: Principles, design and applications , 1996 .

[12]  B E Little,et al.  Synthesis of ideal window filter response in grating-assisted couplers. , 1996, Optics letters.

[13]  Charles Howard Henry,et al.  Fourier transform-based optical waveguide filters and WDMs , 1996, Optical Fiber Communications, OFC..

[14]  D. B. Patterson,et al.  Implications of fiber grating dispersion for WDM communication systems , 1997, IEEE Photonics Technology Letters.

[15]  M Izutsu,et al.  Optical wave-front transformer using the multiple-reflection interference effect inside a resonator. , 1997, Optics letters.

[16]  F. Bakhti,et al.  Design and realization of multiple quarter-wave phase-shifts UV-written bandpass filters in optical fibers , 1997 .

[17]  Masayuki Izutsu,et al.  Multi-Function Optical Filter using Michelson-GT Interferometer , 1997 .

[18]  M. Kajikawa,et al.  A design method of optical bandpass filters , 1997 .

[19]  B.J. Eggleton,et al.  Optimal dispersion of optical filters for WDM systems , 1998, IEEE Photonics Technology Letters.

[20]  Clinton Randy Giles,et al.  Dispersive properties of optical filters for WDM systems , 1998 .

[21]  C.K. Madsen,et al.  Efficient architectures for exactly realizing optical filters with optimum bandpass designs , 1998, IEEE Photonics Technology Letters.

[22]  M Izutsu,et al.  Multifunction optical filter with a Michelson-Gires-Tournois interferometer for wavelength-division-multiplexed network system applications. , 1998, Optics letters.

[23]  J. Skaar,et al.  High-reflectivity fiber-optic bandpass filter designed by use of the iterative solution to the Gel'fand-Levitan-Marchenko equations. , 1998, Optics letters.