Optical device

Details Optical device Optical device

1998-03-02

1999-12-21

Ngo, Hung N.

Optical waveguides

With optical coupler

Switch

385 20, 385 3, 385 10, G02B 610

Patent

active

060059923

ABSTRACT:
The present invention relates to a wavelength selective switch. Said switch comprises at least one MMI waveguide, at least one Mach Zehnder waveguide, at least one phase control element and at least one Bragg grating, where said Mach Zehnder waveguide comprises said phase control element and said Bragg grating and is arranged in connection to at least one MMI waveguide. The invention further comprises a method for switching wavelength channels by using the above mentioned wavelength selective switch.

REFERENCES:
patent: 5295205 (1994-03-01), Miller et al.
patent: 5448390 (1995-09-01), Tsuchiya et al.
patent: 5636309 (1997-06-01), Henry et al.
patent: 5889906 (1999-03-01), Chen
patent: 5933554 (1999-08-01), Leuthold et al.
"Wavelength Division Multiplexer with Photoinduced Bragg Gratings Fabricated in a Planar-Lightwave-Circuit-Type Asymmetric Mach-Zehnder Interferometer on Si", IEEE Photonics Technology Letters, vol. 8, No. 1, Jan. 1996.
"Optical Multi-Mode Interference Devices Based on Self-Imaging: Principles and Applications", Journal of Lightwave Technology, vol. 13, No. 4, Apr. 1995.

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