Optical transmitter comprising a stepwise tunable laser | |
GARNACHE, ARNAUD; ROMANINI, DANIELE; STOECKEL, FREDERIC; KATCHANOV, ALEXANDRE; KNIPPELS, GUIDO; PALDUS, BARBARA; RELLA, CHRISTOPHER; RICHMAN, BRUCE; LEVENSON, MARC; LODENKAMPER, ROBERT | |
2004-03-23 | |
著作权人 | BLUELEAF, INC. |
专利号 | US6711203 |
国家 | 美国 |
文献子类 | 授权发明 |
其他题名 | Optical transmitter comprising a stepwise tunable laser |
英文摘要 | An optical fiber transmitter for emitting an information-carrying laser beam comprises an optically or electrically pumped single mode MQW (multi-quantum well) semiconductor amplifying mirror as a gain medium and a separate external reflector to form a cavity. The external cavity length defines a comb of optical modes, all or a subset of which correspond to channel wavelengths of an optical telecommunications system having plural optical channels. The semiconductor gain element has a homogeneously broadened gain region; a tuning arrangement tunes the laser from mode to mode across the gain region, thereby selecting each one of the plural optical channels. When the maximum gain bandwidth is less than mode-to-mode spacing defined by the cavity, the tuning arrangement includes a means of altering the temperature of the amplifying mirror, thereby translating the frequency of the gain peak from one mode to another. An optical modulator adds modulation to provide an information-carrying laser beam, and a coupler couples the information-carrying laser beam into an optical fiber of the optical telecommunications system. A calibration method based on detecting inter-mode optical transitions (mode hopping) is described. The parameters of the amplifying mirror and tuning arrangement can be adjusted during operation to switch quickly from one cavity mode to another in stepwise fashion. |
公开日期 | 2004-03-23 |
申请日期 | 2002-03-22 |
状态 | 失效 |
内容类型 | 专利 |
源URL | [http://ir.opt.ac.cn/handle/181661/71594] |
专题 | 半导体激光器专利数据库 |
作者单位 | BLUELEAF, INC. |
推荐引用方式 GB/T 7714 | GARNACHE, ARNAUD,ROMANINI, DANIELE,STOECKEL, FREDERIC,et al. Optical transmitter comprising a stepwise tunable laser. US6711203. 2004-03-23. |
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