Use of external optical feedback in a laser to generate a data signal
First Claim
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1. A system for generating a data signal, comprising:
- a laser having a gain medium and configured to emit optical output power, the laser being further configured to receive an external optical feedback optically coupled into the gain medium from an optical medium, wherein the external optical feedback is modulated by data embodied in the optical medium; and
a circuit that generates the data signal corresponding to the data embodied in the optical medium based upon a variation in the optical output power of the laser due to the external optical feedback optically coupled into the gain medium.
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Abstract
Disclosed are various systems and methods for generating a data signal. In one embodiment, a system is provided that comprises a laser with a gain medium, the laser being configured to emit optical power. The laser is further configured to receive an external optical feedback optically coupled into the gain medium from an optical medium. The external optical feedback is modulated by data embodied in the optical medium. A circuit generates the data signal corresponding to the data based upon a variation in the optical output power of the laser due to the external optical feedback directed into the gain medium of the laser.
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Citations
22 Claims
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1. A system for generating a data signal, comprising:
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a laser having a gain medium and configured to emit optical output power, the laser being further configured to receive an external optical feedback optically coupled into the gain medium from an optical medium, wherein the external optical feedback is modulated by data embodied in the optical medium; and
a circuit that generates the data signal corresponding to the data embodied in the optical medium based upon a variation in the optical output power of the laser due to the external optical feedback optically coupled into the gain medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for generating a modulated signal embodying data stored on an optical medium, comprising:
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emitting optical power from a laser;
applying an external optical feedback into a gain medium of the laser using an optical medium, wherein the external optical feedback is modulated by data embodied in the optical medium; and
generating a signal embodying the data based upon a variation in the optical output power of the laser due to the application of the external optical feedback into the gain medium of the laser. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A system for generating a data signal, comprising:
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a laser having a gain medium and emitting optical power;
means for applying external optical feedback to the gain medium and for modulating the external optical feedback with data; and
means for generating the data signal embodying the data based upon a variation in the external optical feedback. - View Dependent Claims (22)
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Specification