Multiple-wavelength optical transceiver

Details Multiple-wavelength optical transceiver Multiple-wavelength optical transceiver

1997-02-13

1999-10-05

Ullah, Akm E.

Optical waveguides

With optical coupler

Plural

359 11, 359 12, 359 13, 359 15, 359 29, 359 56, 359569, 359127, 372108, 372703, G02B 628

Patent

active

059636840

ABSTRACT:
An optical demultiplexing apparatus is capable of spatially separating a multiplexed optical signal into two or more optical wavelength signals thereof. An input multiplexed optical signal present on a first plane is imaged through a color-selective grating plane to a second plane. The color-selective grating has a nonlinear change of diffraction characteristics as a function of incident wavelength to provide substantial spatial separation in the second plane between bands of wavelengths proximate to the two or more optical wavelength signals. In another embodiment, the apparatus uses a polarization-selective grating to spatially separate a polarization-multiplexed optical signal into two substantial spatially separated optical polarization signals. In other embodiments, the optical apparatus may be used as an optical signal multiplexer, splitter, or combiner.

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"polarization-selective computer-generated holograms" by J.E. Ford et al; Optics Letters, vol. 18, No. 6, Mar. 15, 1993.
Ford et al. (Wavelength-selective planar holograms) Optics Letters, vol.21, No. 7, Apr. 1996.
Ford et al. (Polarization-selective computer-generated holograms) Optics Letters, vol. 18, No.06 Mar. 1993.

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