期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 26, 期 23, 页码 2365-2368出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2014.2355720
关键词
Optical interconnections; silicon photonics; microring resonators; control systems
资金
- National Science Foundation Engineering Research Center on Integrated Access Networks (CIAN) [EEC-0812072]
- Columbia Optics and Quantum Electronics IGERT under NSF [DGE-1069420]
- APIC Corporation under FORTUNE [APIC 28212]
Microring resonator devices require thermal initialization to match their intended operating wavelengths in a process called wavelength locking. We use the dither technique, where we apply a small periodic signal to the microring's integrated heater, to demonstrate reliable wavelength locking of a microring resonator filter to an operating wavelength at a wavelength shift rate of 0.012 nm/mu s, an order of magnitude faster than previous demonstrations. We also identify and characterize fundamental speed limits of the wavelength locking process, showing that the integrated-heater bandwidth is the limiting factor.
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