Wavelength division demultiplexing device, and system using it

Details Wavelength division demultiplexing device, and system using it Wavelength division demultiplexing device, and system using it

1994-12-09

1998-03-24

Callahan, Timothy P.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359584, 359578, G01B 902

Patent

active

057318891

ABSTRACT:
A wavelength division demultiplexing device, and a system using the device are disclosed, in which there is utilized a Pabry-Perot etalon using as a spacer layer a Kerr medium in which the refractive index is varied in accordance with the intensity of beams. The wavelength division demultiplexing device according to the present invention includes: a substrate; a first mirror layer formed on the substrate, and consisting of an alternately repeating medium used as a bottom mirror layer; a second mirror layer consisting of an alternating repeating stack of a high refractive index medium and a low refractive index medium used as a top mirror layer; and a spacer layer composed of a Kerr medium and disposed between the first mirror layer and the second mirror layer; wherein the reflectivity of the first mirror layer is higher than that of the second mirror layer; and the thickness of the spacer layer is set such that the value of the initial tuning phase of the spacer layer for the range of wavelengths of an incident beam is m.pi.+t.pi., where m represents an integer, and t represents 0.2-0.4.

REFERENCES:
patent: 3851973 (1974-12-01), Macek
patent: 4525028 (1985-06-01), Dorschner
patent: 5111326 (1992-05-01), Ball
Applied Physics Letters, vol. 30, No. 10,15 May 1977. pp. 519-521.
Applied Optics Letters, vol. 21, No. 12, 15 Jun. 1982. pp. 2195-2198.
Applied Physics Letters, 40(2), 15 Jan. 1982. pp. 120-122.
Applied Optics Letters, vol. 15, No. 7, 1 Apr. 1990. pp. 363-365.
Optical Engineering Letters, vol. 29, No. 3, Mar. 1990, pp. 200-209.

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