Linear optical amplifier using coupled waveguide induced...

Details Linear optical amplifier using coupled waveguide induced... Linear optical amplifier using coupled waveguide induced...

2006-06-06

2006-06-06

Hellner, Mark (Department: 3663)

Optical: systems and elements

Optical amplifier

Particular active medium

Reexamination Certificate

active

07057803

ABSTRACT:
Systems and methods for extending a linear range of a semiconductor optical amplifier (SOA). A feedback layer is included in an SOA. The optical mode of the SOA is distributed between the feedback layer and the active region. As output optical power increases, the mode confinement of the active region increases and the mode is drawn from the feedback layer into the active region. The increase in the mode confinement offsets a loss of material gain such that the linear range of the SOA is extended. In one embodiment, the modal gain increases an higher output optical powers.

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Takemoto, A., et al., “1.3-μm Distributed Feedback Laser Diode with a Grating Accurately Controlled by a New Fabrication Technique,” Journal of Lightwave Technology, vol. 7 No. 12, Dec., 1989.

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