Optical modulator using a dual output laser embedded in a...

Optical: systems and elements – Optical modulator – Light wave temporal modulation

Reexamination Certificate

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C359S279000

Reexamination Certificate

active

07999988

ABSTRACT:
A laser is placed inside the Mach-Zehnder interferometer and the output from opposite ends of the laser are fed directly into the opposite arms of the Mach-Zehnder interferometer. If the output from opposite sides of the laser are equal in amplitude and wavelength, then when the outputs are recombined at the output of the modulator the intensity is dependent on the relative phase of the light in the two arms of the Mach-Zehnder, just as in a normal Mach-Zehnder modulator. Thus by modulating the phase of one or both arms of the modulator, an intensity modulated source is created. This reduces the overall size of the device, and may ensure that all of the output power from the laser is utilized.

REFERENCES:
patent: 7062111 (2006-06-01), Grubb et al.
patent: 2009/0245795 (2009-10-01), Joyner et al.
patent: 2009/0279576 (2009-11-01), Joyner et al.
F. Horst, William M.J. Green, B.J. Offrein, Yurii Vlasov; Echelle grating WDM (de-)multiplexers in SOI technology, based on a design with two stigmatic points; Proc. SPIE, vol. 6996, 69960R (2008); doi:10.1117/12.781232.

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