首页>
外国专利>
Methods and apparatus for improving reliability of an optical device using auxiliary lasers in a photonic integrated circuit
Methods and apparatus for improving reliability of an optical device using auxiliary lasers in a photonic integrated circuit
展开▼
机译:用于提高光子集成电路中使用辅助激光器的光学设备的可靠性的方法和装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
An optical device having a self-repair component capable of curing a defective component(s) is disclosed. To improve reliability as well as manufacturing yield, a photonic integrated circuit (“PIC”) for as a multi-channel optical line terminal (“OLT”) contains spare lasers or standby lasers configured to replace a failed laser(s). In one aspect, PIC includes a set of fixed-wavelength lasers (“FWLs”), a tunable-wavelength auxiliary laser (“TWAL”), a photonic detector, and a tuner. FWLs, for example, generate optical wavelengths representing optical signals. TWAL generates an optical signal with a spectrum of wavelengths based on a setting generated by the tuner. The photonic detector detects a defective wavelength. The tuner adjusts output wavelength of TWAL in response to the defective wavelength. Alternatively, PIC includes a working laser array, standby laser array, and spare laser array capable of providing two-layer laser defective protections.
展开▼