Integrated wideband optical frequency combs with high stability and their application in microwave photonic filters
| Autor: | Haiqing Yuan, Li-Juan Yu, Wang Sunlong, Jianguo Liu, xin zhong, Youwan Tong, Wang Wenting, Wenhui Sun, Ninghua Zhu, Wei Chen |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry Bandwidth (signal processing) 02 engineering and technology Servomechanism Laser 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 010309 optics 020210 optoelectronics & photonics Optics law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Physical and Theoretical Chemistry Allan variance Wideband business Microwave photonic filter Microwave photonics Free spectral range |
| Zdroj: | Optics Communications. 373:59-64 |
| ISSN: | 0030-4018 |
| Popis: | An integrated wideband optical frequency comb (OFC) based on a semiconductor quantum dot laser is realized with high stability. The OFC module is packaged in our lab. A circuit which is designed to provide a low-ripple current and control the temperature regards as a servo system to enhance the stability of the OFC. The frequency stability of the OFC is 2.7×10−9 (Allan Variance). The free spectral range (FSR) of the OFC is 40 GHz and the number of comb lines is up to 55. The flatness of the OFC over span of 4 nm can be limited to 0.5 dB. Negative coefficients microwave photonic filters with multiple taps are generated based on the proposed OFC. For the 10 taps microwave photonic filter, the pass-band at 8.74 GHz has a 3 dB bandwidth of 630 MHz with 16.58 dB side-lobe suppression. Compared with the published microwave photonic filters, the proposed system is more stable, of more compact structures, and of less power consumption. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect