Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Gonghai Liu"'
Autor:
Yuanhao Zhang, Fan Yang, Gonghai Liu, Guojiong Li, Minwen Xiang, Qiaoyin Lu, John F. Donegan, Weihua Guo
Publikováno v:
Journal of Lightwave Technology. 41:3094-3101
Autor:
Ye Liu, Xiang Ma, Can Liu, Quanan Chen, Jia Liu, Qiaoyin Lu, Gonghai Liu, Weihua Guo, Wei Sun
Publikováno v:
Journal of Lightwave Technology. 38:4772-4779
In this article, we report the demonstration of directly modulated grating-assisted microcylinder surface-emitting lasers (GAMSELs) with low threshold. Two second-order gratings are added onto the side and top of the microcylinder cavity to select a
Publikováno v:
Journal of Lightwave Technology. 38:3663-3669
Two-section distributed feedback lasers containing an active section and a modulated reflection section have been demonstrated for direct modulation with negative chirp. The reflection section has the same waveguide core and grating pitch as the acti
Publikováno v:
IEEE Photonics Technology Letters. 31:1495-1498
A four-channel directly modulated active distributed reflector DFB (ADR-DFB) laser array monolithically integrated with a 4 × 1 multimode interference coupler through vertical couplers has been demonstrated in the 1.3 μm wavelength range. The chip
Publikováno v:
Asia Communications and Photonics Conference 2021.
Directly modulated active-distributed-reflector distributed feedback (ADR-DFB) laser integrated with an easy-to-fabricate spot size converter (SSC) is demonstrated, which realizes 3-dB modulation bandwidth ~19 GHz and nearly spherical mode spot.
Publikováno v:
Asia Communications and Photonics Conference/International Conference on Information Photonics and Optical Communications 2020 (ACP/IPOC).
We achieved the wafer-level automatic testing of DFB lasers with active distributed reflector. We can test the entire two-inch wafer with nearly 18000 lasers in about 3 hours, i.e. 0.6 seconds for single laser test. © 2020 The Author(s)
850 nm single-mode surface-emitting DFB lasers with surface grating and large-area oxidized-aperture
Autor:
Chun Jiang, Xiang Ma, Can Liu, Bao Tang, Gonghai Liu, Minwen Xiang, Weihua Guo, Quanan Chen, Qiaoyin Lu, Pengfei Zhang
Publikováno v:
OFC
850 nm single-mode surface-emitting DFB laser based on surface gratings has achieved a threshold current of 1.8 mA and a side-mode suppression-ratio of 47 dB for a large-area oxidized-aperture (2×50 µm2).
Autor:
Jia Liu, Su Tan, John F. Donegan, Wei Sun, Qiaoyin Lu, Xiangyang Dai, Gonghai Liu, Shuangzhi Wei, Weihua Guo
Publikováno v:
Conference on Lasers and Electro-Optics.
We present 1.3pm regrowth-free directly-modulated DBR lasers based on V-shaped slotted surface-gratings through standard photolithography. The fabricated laser has achieved the threshold-current ~12mA, SMSR ~50dB from 0°c to 50°c and 3-dB bandwidth
Publikováno v:
IEEE Photonics Technology Letters. 28:2862-2865
In this letter, we report the first experimental demonstration of the multi-channel interference (MCI) widely tunable semiconductor laser. Mode selection of the MCI laser is achieved by the constructive interference of eight arms with unequal length
Publikováno v:
Chinese Optics Letters. 18:061401
We experimentally demonstrated that the distributed feedback (DFB) lasers with the active distributed reflector achieved a 25.8 Gb/s operation over a wide temperature range of −40 to 85°C. The DFB lasers can achieve additional feedback from an act