| 发明名称 |
TUNABLE LASER AND TUNABLE LASER MODULE |
| 摘要 |
A tunable laser includes: a wavelength filter that includes a first ring resonator and a second ring resonator each of which is formed by a waveguide including a silicon waveguide core, and each of which is capable of shifting each of resonance wavelengths that exit periodically and whose intervals are different from each other; and an integrated device that is optically coupled to the wavelength filter, and in which a first semiconductor optical amplifier and a reflector are provided in sequence from a side of the wavelength filter, wherein the resonance wavelengths of the first ring resonator and the second ring resonator are overlapped with each other at one wavelength, and the resonance wavelengths are overlapped with each other also at a plurality of wavelengths other than the one wavelength. |
| 申请公布号 |
US2016156149(A1) |
申请公布日期 |
2016.06.02 |
| 申请号 |
US201514942026 |
申请日期 |
2015.11.16 |
| 申请人 |
FUJITSU LIMITED |
发明人 |
Takabayashi Kazumasa;Yamamoto Tsuyoshi;Matsuda Manabu |
| 分类号 |
H01S3/067;H01S3/13;H01S3/10;H01S3/083;H01S3/02 |
主分类号 |
H01S3/067 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A tunable laser comprising:
a wavelength filter that includes a first ring resonator and a second ring resonator each of which is formed by a waveguide including a silicon waveguide core, and each of which is capable of shifting each of resonance wavelengths that exit periodically and whose intervals are different from each other; and an integrated device that is optically coupled to the wavelength filter,and in which a first semiconductor optical amplifier and a reflector are provided in sequence from a side of the wavelength filter, wherein the resonance wavelengths of the first ring resonator and the second ring resonator, each of which exists periodically, are overlapped with each other atone wavelength, and the resonance wavelengths are overlapped with each other also at a plurality of wavelengths other than the one wavelength, and the intervals of the resonance wavelengths of the first ring resonator and the second ring resonator are set so that a vernier mode interval that is an interval between the one wavelength and a wavelength that is closest to the one wavelength from among the plurality of wavelengths becomes wider than a reflection wavelength range of the reflector. |
| 地址 |
Kawasaki-shi JP |
