A semiconductor optical amplifier includes a semiconductor substrate; an optical waveguide that includes an active layer formed on the semiconductor substrate; and a wavelength selective reflection film that is formed on an end face where signal light is incident on the optical waveguide the wavelength selective reflection film allows transmission of the signal light, and reflects light of any wavelength other than the signal light.

Claims

18 · 2 independent · depth 3

18 granted claims

›1.independentA semiconductor optical amplifier comprising:na semiconductor substrate;an optical waveguide that includes an active layer formed over the semiconduct…+12

›2.↳ 1The semiconductor optical amplifier according to claim 1, further comprising:na diffraction grating that is formed above and/or below the optical wave…d2

›3.↳ 1The semiconductor optical amplifier according to claim 1, further comprising:nan antireflection film formed on the end face where the signal light is …d2

›4.↳ 1The semiconductor optical amplifier according to claim 1, whereinnthe wavelength selective reflection film is a dielectric multi-layer film.d2+3

›6.↳ 1The semiconductor optical amplifier according to claim 1, whereinnthe active layer includes a quantum well structure.d2

›7.↳ 1The semiconductor optical amplifier according to claim 1, whereinnthe active layer is a quantum dot active layer.d2+1

›9.↳ 1The semiconductor optical amplifier according to claim 1, whereinnthe signal light is emitted at an angle tilted with respect to a direction substanti…d2

›10.↳ 1The semiconductor optical amplifier according to claim 1, whereinna peak of the wavelength of the signal light is a longer wavelength than a peak of t…d2

›13.↳ 1The semiconductor optical amplifier according to claim 1, further comprising:na pair of electrodes formed above and below the active layer; and a powe…d2

›14.independentA optical module comprising:na semiconductor optical amplifier including:a semiconductor substrate;an optical waveguide that includes an active layer …+4

Classifications

8 codes

IPC · International Patent Classification

Section H — Electricity

H01S5/101
H01S5/0681
H01S5/2206
H01S5/34
H01S5/0268
H01S5/0288

USPC · US Patent Classification

359/344372/50.11

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3.3 y

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Mark Hellner

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Type	Document	Date
related publication	US 20100245990 A1	30 Sep 2010

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