Amplifiers – Parametric amplifiers – Semiconductor type
Patent
1989-12-05
1991-05-07
Moskowitz, Nelson
Amplifiers
Parametric amplifiers
Semiconductor type
372 21, 372 43, G02B 2744, G02F 116
Patent
active
050140159
ABSTRACT:
An ultra-short optical pulse source uses a gain-switched laser diode with a dispersive delay line to compress the optical pulse output from the laser diode, the gain-switched laser diode having particular spectral characteristics. The gain-switched laser diode may be tested by energizing it with a continuous wave signal at or near the lasing threshold level. The resulting spectrum is examined for the presence of satellite spectral intensity features. Those gain-switched laser diodes that exhibit a spectrum having all satellite spectral features below a predetermined level with respect to the intensity of a principal spectral component are selected for use in the ultra-short optical pulse source.
REFERENCES:
patent: 4588957 (1986-05-01), Balart et al.
patent: 4750809 (1988-06-01), Kafka et al.
Agrawal et al.; "Amplification and compression . . . Amplifiers"; Opt. Lett., vol. 14, #10, pp. 500-502, 5/15/89; abst. only.
Hawkins et al.; "Energy Variations . . . Diode Lasers"; Opt. Soc. Am., 1/14/87, pp. 100-102, Confer. in NV; abst. only.
Damm et al.; "Compression of Picosecond. . . Fibers"; Opt. Lett., vol. 10, #4, pp. 176-178, 4/85; abst. only.
Franzer et al.; "Optical Sampling . . . Laser Diodes"; Electronics Lett., vol. 23, #6, pp. 289-290, 3/12/87; abst. only.
Gray Francis I.
Moskowitz Nelson
Tektronix Inc.
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