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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 18, Iss. 2 — Feb. 1, 2000
  • pp: 252–

Optical Half-Band Filters

Kaname Jinguji and Manabu Oguma

Journal of Lightwave Technology, Vol. 18, Issue 2, pp. 252- (2000)


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Abstract

This paper proposes two kinds of novel 2 2 circuit configuration for finite-impulse response (FIR) half-band filters. These configurations can be transformed into each other by a symmetric transformation and their power transmittance is identical. The configurations have only about half the elements of conventional FIR lattice-form filters. We derive a design algorithm for achieving desired power transmittance spectra. We also describe 2 2 circuit configurations for infinite-impulse response (IIR) half-band filters. These configurations are designed to realize arbitrary-order IIR half-band filter characteristics by extending the conventional half-band circuit configuration used in millimeter-wave devices. We discuss their filter characteristics and confirm that they have a power half-band property. We demonstrate design examples including FIR maximally flat half-band filters, an FIR Chebyshev half-band filter, and an IIR elliptic half-band filter.

[IEEE ]

Citation
Kaname Jinguji and Manabu Oguma, "Optical Half-Band Filters," J. Lightwave Technol. 18, 252- (2000)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-18-2-252


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References

  1. K. Jinguji and M. Kawachi, "Synthesis of coherent two-port lattice-form optical delay-line circuit", J. Lightwave Technol., vol. 13, pp. 73- 82, Jan. 1995.
  2. K. Oda, N. Takato, H. Toba and K. Nosu, "A wide-band guided-wave periodic multi/demultiplexer with a ring resonator for optical FDM transmission systems", J. Lightwave Technol., vol. 6, pp. 1016- 1023, June 1988.
  3. K. Jinguji, N. Takato, Y. Hida, T. Kitoh and M. Kawachi, "Two-port optical wavelength circuits composed of cascaded Mach-Zehnder interferometers with point-symmetrical configurations ", J. Lightwave Technol., vol. 14, pp. 2301- 2310, Oct. 1996 .

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