Virtually imaged phased array as a wavelength demultiplexer

Details Virtually imaged phased array as a wavelength demultiplexer Virtually imaged phased array as a wavelength demultiplexer

1996-07-24

1999-12-07

Spyrou, Cassandra

Optical: systems and elements

Light interference

359127, 359629, 359839, 359900, G02B 2700, H04J 1402

Patent

active

059993200

ABSTRACT:
A virtually imaged phased array, or "wavelength splitter", which receives a wavelength division multiplexed light including at least two carriers and produces a spatially distinguishable output light for each carrier. The virtually imaged phased array includes a transparent material having first and second surfaces thereon. The second surface has a reflectivity which allows a portion of light incident thereon to be transmitted therethrough. The wavelength division multiplexed light is reflected a plurality of times in the transparent material between the first and second surfaces to cause a plurality of lights to be transmitted through the second surface. The plurality of transmitted lights interfere with each other to produce a respective output light for each carrier of the wavelength division multiplexed light. Further, each carrier is at a respective wavelength within a continuous range of wavelengths, and the output light formed for a respective carrier is spatially distinguishable from an output light formed for a carrier having any other wavelength within the continuous range of wavelengths. A method for making the virtually imaged phased array includes the steps of forming reflecting films and a window on a transparent material.

REFERENCES:
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patent: 5583683 (1996-12-01), Scobey
W. H. Fincham and M. H. Freeman, OPTICS, Ninth ed., Butterworth (Publishers) Inc., Boston, .sctn. .sctn. 14.7 & 14.14, Jan. 1980.
M. Shirasaki, Temperature Independent Interferometer For WDM Filters, Paper WeD.1.6 ECOC '96 (European Conference on Optical Communication), Sep. 18, 1996.
M. Shirasaki, Filtering Characteristics of Virtually-Imaged Phased Array, Presented at IPR (Integrated Photonics Research) Topical Meeting Paper IMC3, Apr. 29, 1996, Boston, MA.
M. Shirasaki, Large Angular-Dispersion By Virtually-Imaged Phased-Array (VIPA) and Its Application to Wavelength Demultiplexing, MOC '95, Hiroshima, Oct. 1995.
M. Shirasaki, Large Angular Dispersion by a Virtually Imaged Phased Array and its Application to a Wavelength Demultimplexer, OPTICS LETTERS, vol. 21, No. 5, Mar. 1996.

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