Planar lightwave circuit for conditioning tunable laser output
文献类型：专利
| 作者 | MURRY, STEFAN, J.; LIN, CHIH-HSIANG; KINSELLA, N., STEPHAN |
| 发表日期 | 2002-11-21 |
| 专利号 | WO2002093206A2 |
| 著作权人 | APPLIED OPTOELECTRONICS, INC. |
| 国家 | 世界知识产权组织 |
| 文献子类 | 发明申请 |
| 其他题名 | Planar lightwave circuit for conditioning tunable laser output |
| 英文摘要 | A planar lightwave circuit (PLC) module for conditioning light output from a tunable laser designed to generate light at a target wavelength. The PLC module has a substrate; a primary waveguide embedded in said substrate, said primary waveguide having an input end for receiving light from the tunable laser and an output end for outputting said light; and at least a first secondary waveguide embedded in said substrate, said first secondary waveguide receiving a first portion of said light from the tunable laser. A filter having a passband centered on the target wavelength is coupled to an output of the first secondary waveguide to receive said first portion of light, and generates a signal related to the intensity of said first portion of light in the passband centered on the target wavelength. This may be used by a processor and associated laser control circuitry for wavelength locking purposes. A zigzag waveguide device-based apparatus and method for achieving or maintaining wavelength lock for a tunable laser designed to generate light at a selected one of a plurality of target wavelengths. The apparatus has a reflectively coupled zigzag waveguide device for receiving a portion of light output by the tunable laser, the zigzag waveguide device having a plurality of filters, each having a passband centered at a respective one of the plurality of target wavelengths, whereby said zigzag waveguide device produces a plurality of filtered light outputs. A plurality of photosensors is provided, one for each of said plurality of filters, each said filter positioned to receive a respective one of the plurality of filtered light outputs, each said filter producing a filter output signal related to the intensity of said portion of light in the passband of the corresponding filter. A processor generates, in response to the plurality of filter output signals, a control signal to adjust the lasing wavelength of the tunable laser to achieve or maintain said selected one of the target wavelengths. In one embodiment, the zigzag waveguide device includes a first waveguide that is coupled to the laser to receive light output. A first wavelength filter is coupled to the first waveguide to receive light therefrom. The first wavelength filter transmits a band of wavelengths and reflecting one or more bands of wavelengths. A second waveguide is coupled to the first wavelength filter and receives light reflected from the first wavelength filter. A mirror is coupled to the second waveguide and receives light from the second waveguide. A third waveguide is coupled to the mirror to receive light reflected from the mirror. A second wavelength filter is coupled to the third waveguide to receive light therefrom. The second wavelength filter transmits a band of wavelengths different from the band of wavelengths transmitted by the first wavelength filter and reflects one or more bands of wavelengths. A first photodiode is coupled to receive light transmitted by the first wavelength filter. A second photodiode is coupled to receive light transmitted by the second wavelength filter. A laser wavelength controller is coupled to the tunable laser and is capable of modifying the wavelength of the tunable laser based at least in |
| 公开日期 | 2002-11-21 |
| 申请日期 | 2002-02-26 |
| 状态 | 未确认 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/88022]  |
| 专题 | 半导体激光器专利数据库 |
| 作者单位 | APPLIED OPTOELECTRONICS, INC. |
| 推荐引用方式 GB/T 7714 | MURRY, STEFAN, J.,LIN, CHIH-HSIANG,KINSELLA, N., STEPHAN. Planar lightwave circuit for conditioning tunable laser output. WO2002093206A2. 2002-11-21. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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