Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Changda Xu"'
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 4, Pp 1-6 (2022)
Numerous studies have shown that the use of PAM-4 modulation format for DFB lasers with integrated passive regions (DFB IPE lasers) can greatly improve information transmission capabilities. In this paper, it is found by theoretical analysis that a p
Externí odkaz:
https://doaj.org/article/7af9c54715ca4e9b92120f660eccf4e4
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 4, Pp 1-8 (2022)
Recently, external-cavity tunable lasers (ECTLs) have been widely used in WDM systems for their excellent characteristics, such as high side-mode suppression ratio (SMSR), low relative intensity noise (RIN) and narrow line width. In this paper, we pr
Externí odkaz:
https://doaj.org/article/5485bccf03644be38ac132c495bd45c7
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 4, Pp 1-5 (2022)
We investigate on the wideband phase-modulation to amplitude-modulation (PM-AM) conversion based on the chromatic dispersion in fiber. To overcome the shortcomings of the single-tone or dual-tone modulation-based model in previous researches, we pres
Externí odkaz:
https://doaj.org/article/bb09f2b417cc44c8be617152686b9808
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 3, Pp 1-5 (2022)
A novel method to extract the grating coupling coefficient of distributed feedback (DFB) lasers by comparing the theoretical and experimental values of the side mode spacing is demonstrated. Compared with the traditional method, the proposed method i
Externí odkaz:
https://doaj.org/article/adfe9dee1563497daf52cca1080fe730
Autor:
Ya Jin, Shaokang Chen, Zhuang Xie, Kunpeng Zhai, Changda Xu, Jian Wang, Yinfang Chen, Huashun Wen, Yu Liu, Wei Chen, Ninghua Zhu
Publikováno v:
IEEE Photonics Journal, Vol 14, Iss 1, Pp 1-6 (2022)
A novel optical frequency-hopping (OFH) scheme using dual-drive Mach-Zehnder modulator (DD-MZM) is proposed and demonstrated for secure transmission in fiber-optic networks. In the proposed scheme, by adjusting the phase difference between the radio
Externí odkaz:
https://doaj.org/article/d80fc36cb29c438bb207e70019081dc2
Publikováno v:
Photonics, Vol 10, Iss 5, p 579 (2023)
A physical model of an external-cavity tunable laser (ECTL) utilizing the vernier effect of a dual Fabry–Perot (FP) etalon is presented and simulated using the finite-difference traveling wave (FDTW) method. In this paper, we provide a detailed exp
Externí odkaz:
https://doaj.org/article/738f86a8dc9f4aa4b45f424d69a82927
Autor:
Changda Xu, Ya Jin, Jian Wang, Wenhui Sun, Liangming Xiong, Yinfang Chen, Wei Chen, Ninghua Zhu
Publikováno v:
IEEE Photonics Journal, Vol 13, Iss 4, Pp 1-6 (2021)
We proposed a new type of distributed feedback laser with alternating active- and passive-cavities (APC DFB), which enjoys the same quantum well layer where the butt-joint re-growth process can be avoided. By utilizing the chirp characteristics of th
Externí odkaz:
https://doaj.org/article/32a5320fbbf94b438ae931681a96a56c
Autor:
Chengyuan Cai, Junqiao Zhu, Xiaobin Huang, Changda Xu, Zhenyu Wang, Tingting You, Xiao Wang, Jisheng Xiao, Xiaopin Duan
Publikováno v:
Advanced Functional Materials.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::423defe99dc878700ae1803a7920add9
https://doi.org/10.1002/adfm.202214998
https://doi.org/10.1002/adfm.202214998
Publikováno v:
2022 International Applied Computational Electromagnetics Society Symposium (ACES-China).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cb48b0a2d82823adc343de469ecdc1e
https://doi.org/10.1109/aces-china56081.2022.10065244
https://doi.org/10.1109/aces-china56081.2022.10065244
Publikováno v:
26th Optoelectronics and Communications Conference.
We established the E-DBR lasers analysis model by transmission matrix, equivalent cavity length, and waveguide coupling. The results show that the introduction of micro-ring can increase the threshold gain difference, and narrow the resonance linewid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b293ed53da1c12ee9fb1a64990cec3c0
https://doi.org/10.1364/oecc.2021.js3d.1
https://doi.org/10.1364/oecc.2021.js3d.1