Technique for measuring semiconductor laser chirp

Details Technique for measuring semiconductor laser chirp Technique for measuring semiconductor laser chirp

1998-02-23

2000-02-15

Healy, Brian

Coherent light generators

Particular active media

Semiconductor

372 26, 372 28, 385123, 359159, 359160, 359161, H01S 318, G02B 602, H04B 1000

Patent

active

060261056

ABSTRACT:
A technique for characterizing laser chirp utilizes an optical fiber and its inherent interferometric properties. An RF modulating signal is applied to the laser, where the modulated output signal thereafter propagates through a conventional optical fiber. A photoreceiver and spectrum analyzer are coupled to the opposite end of the optical fiber. By adjusting the power of the applied RF signal, the maximum IIN can be determined. The laser chirp can then be calculated by dividing the measurement frequency by the modulation current associated with the maximum IIN value.

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patent: 5652763 (1997-07-01), Delfyett, Jr.
patent: 5850303 (1998-12-01), Yamamoto et al.
patent: 5852700 (1998-12-01), Caponi et al.

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