TY - JOUR
T1 - Mid-Infrared Octave-Spanning Supercontinuum and Frequency Comb Generation in a Suspended Germanium-Membrane Ridge Waveguide
AU - Yuan, Jinhui
AU - Kang, Zhe
AU - Li, Feng
AU - Zhang, Xianting
AU - Sang, Xinzhu
AU - Wu, Qiang
AU - Yan, Binbin
AU - Wang, Kuiru
AU - Zhou, Xian
AU - Zhong, Kangping
AU - Zhou, Guiyao
AU - Yu, Chongxiu
AU - Lu, Chao
AU - Tam, Hwa Yaw
AU - Wai, Alex
N1 - Funding Information:
Manuscript received December 6, 2016; revised March 13, 2017 and April 30, 2017; accepted May 8, 2017. Date of publication May 10, 2017; date of current version June 19, 2017. This work was supported in part by the National Natural Science Foundation of China (61307109 and 61475023), in part by Beijing Youth Top-notch Talent Support Program (2015000026833ZK08), in part by Natural Science Foundation of Beijing (4152037), in part by the Fund of State Key Laboratory of Information Photonics and Optical Communications (BUPT) China (IPOC2016ZT05), in part by Research Grant Council of the Hong Kong Special Administrative Region China (PolyU152471/16E), and in part by Shenzhen Science and Technology Innovation Commission (JCYJ20160331141313917). J. Yuan and Z. Kang contributed equally to this paper. (Corresponding author: Zhe Kang and Feng Li.) J. Yuan, X. Sang, B. Yan, K. Wang, and C. Yu are with the State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing, 100876, China.
Publisher Copyright:
© 1983-2012 IEEE.
PY - 2017/7
Y1 - 2017/7
N2 - Stable octave-spanning supercontinuum (SC) in the mid-infrared (MIR) region finds extensive applications in spectroscopy, metrology, biochemistry, etc. The absorption of conventional silicon- or silicon oxide-dominated nonlinear media makes SC generation in MIR region technically challenging. In this paper, we propose ultrabroadband MIR-SC generation using a suspended germanium-membrane ridge waveguide. We theoretically showed that when pump pulses centered at 4.8 μm with pulse width at 180 fs and peak power at 800 W are injected into a 4-mm-long proposed ridge waveguide, the SC generated ranges from 1.96-12 μm (about 2.6 octaves), extending deep into the 'fingerprint' region. The first-order coherence is calculated to confirm the stability of the generated SC. The performance of the SC-based frequency comb is also investigated by assuming a 100-pulses pump source at a repetition rate of 100 kHz.
AB - Stable octave-spanning supercontinuum (SC) in the mid-infrared (MIR) region finds extensive applications in spectroscopy, metrology, biochemistry, etc. The absorption of conventional silicon- or silicon oxide-dominated nonlinear media makes SC generation in MIR region technically challenging. In this paper, we propose ultrabroadband MIR-SC generation using a suspended germanium-membrane ridge waveguide. We theoretically showed that when pump pulses centered at 4.8 μm with pulse width at 180 fs and peak power at 800 W are injected into a 4-mm-long proposed ridge waveguide, the SC generated ranges from 1.96-12 μm (about 2.6 octaves), extending deep into the 'fingerprint' region. The first-order coherence is calculated to confirm the stability of the generated SC. The performance of the SC-based frequency comb is also investigated by assuming a 100-pulses pump source at a repetition rate of 100 kHz.
KW - Frequency comb generation
KW - Ge waveguide
KW - mid-infrared region
KW - supercontinuum generation
UR - https://www.scopus.com/pages/publications/85028432761
U2 - 10.1109/JLT.2017.2703644
DO - 10.1109/JLT.2017.2703644
M3 - Journal article
AN - SCOPUS:85028432761
SN - 0733-8724
VL - 35
SP - 2994
EP - 3002
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 14
ER -