Semiconductor optical amplifier

Details Semiconductor optical amplifier Semiconductor optical amplifier

1987-01-20

1988-05-31

Wan, Gene

Amplifiers

Signal feedback

Combined with control of bias voltage of signal amplifier

330 43, 350 9613, 357 19, 372 50, G02B 610

Patent

active

047476508

ABSTRACT:
A semiconductor amplifying device 1 comprises, a substrate 2, a first optical waveguide 7 on the substrate 2 for transmitting an optical signal, a second optical waveguide 8 on the substrate 2, a third optical waveguide 11 on the substrate 2 forming an optical coupling with the first optical waveguide 7 along an interaction length and constructed as a semiconductor optical amplifier 11 that receives and amplifies at least a portion of the optical signal to the first waveguide 7, and antireflective means 16 covering light emitting edges 7a, 8a, 11a, 3a at corresponding ends of the respective waveguides 7, 8, 11 and an optical transmitting medium 3, the second optical coupling having a phase mismatch selected for a wavelength of the optical signal to provide for a power gain in the first optical waveguide 7 attributed to an amplified portion of the same wavelength of the optical signal coupled back from the amplifier 11.

REFERENCES:
patent: 3465159 (1966-06-01), Stern
patent: 4146297 (1979-05-01), Alferness et al.
patent: 4240693 (1980-12-01), Johnson et al.
patent: 4334774 (1982-07-01), Glass et al.
patent: 4359776 (1982-11-01), Acket et al.
patent: 4698821 (1987-10-01), Terakado et al.

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