Optical power combining for optical frequency conversion having nonlinear feedback
First Claim
1. An optical apparatus comprising:
- a) a combiner having a combiner output port and having N≧
2 input ports indexed with an integer i;
b) a set of N optical radiation sources in one to one correspondence with said input ports, each of said sources providing input optical radiation having an input power Pi to said corresponding input port; and
c) an optical frequency converter optically coupled to said combiner output port and providing output optical radiation;
wherein at least one of said sources receives source feedback optical radiation having a non-zero feedback power Fi from said frequency converter,wherein said source feedback optical radiation is optically coupled to said at least one of said sources to provide optical feedback,wherein said feedback power Fi has a nonlinear dependence on the corresponding input power Pi.
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Accused Products
Abstract
Wavelength combining for nonlinear frequency conversion is provided having nonlinear feedback to the sources being combined. Power that is fed back to the sources is obtained from within a wavelength conversion device. Therefore, the feedback power to a source has a nonlinear dependence on input power provided by that source to the wavelength conversion device. Such nonlinear feedback can advantageously reduce the sensitivity of the output power from the wavelength conversion device to variations in the nonlinear coefficients of the conversion device. The reason for this reduced sensitivity is that in preferred embodiments, the feedback power increases if a nonlinear coefficient decreases. This increased feedback tends to increase the power supplied to the conversion device, thus mitigating the effect of the reduced nonlinear coefficient.
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Citations
27 Claims
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1. An optical apparatus comprising:
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a) a combiner having a combiner output port and having N≧
2 input ports indexed with an integer i;b) a set of N optical radiation sources in one to one correspondence with said input ports, each of said sources providing input optical radiation having an input power Pi to said corresponding input port; and c) an optical frequency converter optically coupled to said combiner output port and providing output optical radiation; wherein at least one of said sources receives source feedback optical radiation having a non-zero feedback power Fi from said frequency converter, wherein said source feedback optical radiation is optically coupled to said at least one of said sources to provide optical feedback, wherein said feedback power Fi has a nonlinear dependence on the corresponding input power Pi. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification