Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118983
W. Jin, W. Bi, Xinghu Fu, G. Fu
We report the first fabrication of a polarization converter in a highly birefringent elliptical microfiber, which is made by periodically twisting a microfiber with an ellipticity of ∼0.7 and a diameter of ∼2.8 along its major axis. Strong input polarization suppression of ∼20 dB is achieved at a resonant wavelength of ∼1556.4 nm with a device length of ∼3.12 mm, one or even more two orders of magnitude shorter than that fabricated in the conventional Hi-Bi fiber. This device demonstrates temperature stability, which is of 15pm/O.
{"title":"Temperature insensitive structural polarization converters in highly birefringent microfibers","authors":"W. Jin, W. Bi, Xinghu Fu, G. Fu","doi":"10.1109/CLEOPR.2017.8118983","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118983","url":null,"abstract":"We report the first fabrication of a polarization converter in a highly birefringent elliptical microfiber, which is made by periodically twisting a microfiber with an ellipticity of ∼0.7 and a diameter of ∼2.8 along its major axis. Strong input polarization suppression of ∼20 dB is achieved at a resonant wavelength of ∼1556.4 nm with a device length of ∼3.12 mm, one or even more two orders of magnitude shorter than that fabricated in the conventional Hi-Bi fiber. This device demonstrates temperature stability, which is of 15pm/O.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"211 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74151934","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118971
A. Moscoso-Mártir, F. Merget, J. Mueller, J. Hauck, S. Romero-García, B. Shen, F. Lelarge, R. Brenot, A. Garreau, E. Mentovich, A. Sandomirsky, A. Badihi, D. Rasmussen, R. Setter, J. Witzens
We present a flip-chip integration process in which the vertical alignment is guaranteed by a mechanical contact between pedestals defined in a recess etched into a silicon photonics chip and a laser or semiconductor optical amplifier. By selectively etching up to the active region of the III-V materials, we can make the accuracy of vertical alignment independent on the process control applied to layer thicknesses during silicon photonics or III-V chip fabrication, enabling alignment tolerances below ±10 nm in the vertical (Z-)direction.
{"title":"Hybrid silicon photonics flip-chip laser integration with vertical self-alignment","authors":"A. Moscoso-Mártir, F. Merget, J. Mueller, J. Hauck, S. Romero-García, B. Shen, F. Lelarge, R. Brenot, A. Garreau, E. Mentovich, A. Sandomirsky, A. Badihi, D. Rasmussen, R. Setter, J. Witzens","doi":"10.1109/CLEOPR.2017.8118971","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118971","url":null,"abstract":"We present a flip-chip integration process in which the vertical alignment is guaranteed by a mechanical contact between pedestals defined in a recess etched into a silicon photonics chip and a laser or semiconductor optical amplifier. By selectively etching up to the active region of the III-V materials, we can make the accuracy of vertical alignment independent on the process control applied to layer thicknesses during silicon photonics or III-V chip fabrication, enabling alignment tolerances below ±10 nm in the vertical (Z-)direction.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"17 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74682109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8119085
Pengcheng Chen, X. Shu, H. Cao
We propose and demonstrate a novel refractive index (RI) sensor based on an ultra-weak intrinsic fiber Fabry-Perot interferometer (FPI), which is simply fabricated by splicing a tiny section of thin-core fiber (TCF) to a standard single-mode fiber (SMF). The fusion interface (SMF/TCF) and the well cleaved TCF end face form a low fringe contrast FPI in the air. It exhibits an average RI sensitivity of 240dB/RIU over a wide RI range of 1.3326–1.4305, with a maximum sensitivity of 1110.7dB/RIU at the RI of 1.4305.
{"title":"High sensitivity refractive index sensor based on optical fiber ultra-weak Fabry-Perot interferometer","authors":"Pengcheng Chen, X. Shu, H. Cao","doi":"10.1109/CLEOPR.2017.8119085","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8119085","url":null,"abstract":"We propose and demonstrate a novel refractive index (RI) sensor based on an ultra-weak intrinsic fiber Fabry-Perot interferometer (FPI), which is simply fabricated by splicing a tiny section of thin-core fiber (TCF) to a standard single-mode fiber (SMF). The fusion interface (SMF/TCF) and the well cleaved TCF end face form a low fringe contrast FPI in the air. It exhibits an average RI sensitivity of 240dB/RIU over a wide RI range of 1.3326–1.4305, with a maximum sensitivity of 1110.7dB/RIU at the RI of 1.4305.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"327 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77071404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8119088
Shanting Hu, A. Matsutani, F. Koyama
In this paper, we present the unidirectional coupling behavior of a laterally coupled VCSEL and slow light modulator/amplifier. When we pump VCSEL and modulator/amplifier separately, the strong coupling takes place from the VCSEL while a week coupling can be seen for the opposite direction. Experimental results are presented to testify our concept.
{"title":"Unidirectional coupling of laterally coupled VCSEL and slow light modulator/amplifier","authors":"Shanting Hu, A. Matsutani, F. Koyama","doi":"10.1109/CLEOPR.2017.8119088","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8119088","url":null,"abstract":"In this paper, we present the unidirectional coupling behavior of a laterally coupled VCSEL and slow light modulator/amplifier. When we pump VCSEL and modulator/amplifier separately, the strong coupling takes place from the VCSEL while a week coupling can be seen for the opposite direction. Experimental results are presented to testify our concept.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"72 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86573292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118682
Kang-wen Yang, Jieshi Jiang, Q. Hao, H. Zeng
A multi-color tunable picosecond laser source was demonstrated in a fiber optical parametric oscillator. By cascade four-wave mixing process in the photonic crystal fiber, we obtained picosecond pulses at 9 wavelengths with average power of milliwatt level.
{"title":"Multi-color tunable laser source based on fiber optical parametric oscillator","authors":"Kang-wen Yang, Jieshi Jiang, Q. Hao, H. Zeng","doi":"10.1109/CLEOPR.2017.8118682","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118682","url":null,"abstract":"A multi-color tunable picosecond laser source was demonstrated in a fiber optical parametric oscillator. By cascade four-wave mixing process in the photonic crystal fiber, we obtained picosecond pulses at 9 wavelengths with average power of milliwatt level.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"80 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89842078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Grating coupler, as one of the key components can provide convenient on-wafer testing and packaging for integrated photonics. Silicon nitride (SiNx) grating coupler suffers from lower efficiency due to the relative low material refractive index. The efficiency of SiNx grating coupler can be improved by using high reflectivity silicon grating reflectors underneath. However, such silicon grating reflector requires several fabrication steps, including lithography, etching, high precision alignment (HPA), and chemical mechanical polishing (CMP). In this work, we demonstrate an easy-to-fabricate SiNx grating coupler only requiring a single patterning step without the need of HPA and CMP. A coupling coefficient of −2.5 dB and 1-dB-bandwidth of 65 nm have been experimentally measured.
{"title":"Fabrication-friendly high-efficiency silicon nitride grating coupler","authors":"Pengfei Xu, Yanfeng Zhang, Zengkai Shao, Lin Liu, Lidan Zhou, Chunchuan Yang, Yujie Chen, Siyuan Yu","doi":"10.1109/CLEOPR.2017.8118727","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118727","url":null,"abstract":"Grating coupler, as one of the key components can provide convenient on-wafer testing and packaging for integrated photonics. Silicon nitride (SiNx) grating coupler suffers from lower efficiency due to the relative low material refractive index. The efficiency of SiNx grating coupler can be improved by using high reflectivity silicon grating reflectors underneath. However, such silicon grating reflector requires several fabrication steps, including lithography, etching, high precision alignment (HPA), and chemical mechanical polishing (CMP). In this work, we demonstrate an easy-to-fabricate SiNx grating coupler only requiring a single patterning step without the need of HPA and CMP. A coupling coefficient of −2.5 dB and 1-dB-bandwidth of 65 nm have been experimentally measured.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"79 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83796188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118776
M. Okada, H. Kishikawa, N. Goto, Yi-Lin Yu, S. Liaw
A multi-point temperature sensing system using linear-cavity laser consisting of a semiconductor optical amplifier, an arrayed waveguide grating, and fiber Bragg grating elements was proposed. We experimentally demonstrated two-point simultaneous temperature sensing.
{"title":"Multipoint temperature sensing using linear-cavity fiber laser with AWG and FBGs","authors":"M. Okada, H. Kishikawa, N. Goto, Yi-Lin Yu, S. Liaw","doi":"10.1109/CLEOPR.2017.8118776","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118776","url":null,"abstract":"A multi-point temperature sensing system using linear-cavity laser consisting of a semiconductor optical amplifier, an arrayed waveguide grating, and fiber Bragg grating elements was proposed. We experimentally demonstrated two-point simultaneous temperature sensing.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"104 1","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88129551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8119015
Lian-Kuan Chen, Yang Hong
In this paper, we will review our recent works on advanced signal processing for VLC, particularly the orthogonal circulant matrix transform (OCT) precoding that requires no channel state information. The benefits of OCT precoding in SISO-, MIMO-VLC, and the inherent reason of performance improvement, will be discussed. In addition, comparisons of the existing solutions to combat the limited modulation bandwidth of VLC systems will be presented. Potential applications of the OCT precoding in other systems will be given.
{"title":"Channel-independent signal processing for high-speed VLC systems","authors":"Lian-Kuan Chen, Yang Hong","doi":"10.1109/CLEOPR.2017.8119015","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8119015","url":null,"abstract":"In this paper, we will review our recent works on advanced signal processing for VLC, particularly the orthogonal circulant matrix transform (OCT) precoding that requires no channel state information. The benefits of OCT precoding in SISO-, MIMO-VLC, and the inherent reason of performance improvement, will be discussed. In addition, comparisons of the existing solutions to combat the limited modulation bandwidth of VLC systems will be presented. Potential applications of the OCT precoding in other systems will be given.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"47 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90377485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118671
Zhe-Wen Ding, Chun-liu Zhao, T. Lang, Jiajun Jin
Common surface plasmon resonance refractive index sensors often use side polished, tapered or etched fiber to enable evanescent wave to reach the metal-dielectric interface. These processes are often complex and make fiber fragile. In this paper, we fabricate a simple structure formed by multimode fiber and no-core fiber to stimulate surface plasmon wave. According to our research, the sensitivity of the sensor can reach −48.6 dB/RIU, and the resolution is 2.06 × 10−4 RIU. When surrounding refractive index is beyond 1.353, the sensitivity is 1582.5nm/RIU and the resolution is 1.26 × 10−4 RIU.
{"title":"Fiber refractive index sensor based on surface plasmon resonance with no-core fiber","authors":"Zhe-Wen Ding, Chun-liu Zhao, T. Lang, Jiajun Jin","doi":"10.1109/CLEOPR.2017.8118671","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118671","url":null,"abstract":"Common surface plasmon resonance refractive index sensors often use side polished, tapered or etched fiber to enable evanescent wave to reach the metal-dielectric interface. These processes are often complex and make fiber fragile. In this paper, we fabricate a simple structure formed by multimode fiber and no-core fiber to stimulate surface plasmon wave. According to our research, the sensitivity of the sensor can reach −48.6 dB/RIU, and the resolution is 2.06 × 10−4 RIU. When surrounding refractive index is beyond 1.353, the sensitivity is 1582.5nm/RIU and the resolution is 1.26 × 10−4 RIU.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"36 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75388477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-07-31DOI: 10.1109/CLEOPR.2017.8118936
Z. Fang, Xianfeng Tang, Y. Zhai, Xiaoguang Zhang, Lixia Xi, Wenbo Zhang
We propose a new scheme to realize optical logic gates using polarization addition with direct detection. Two polarizations of the optical signal are modulated respectively by two binary inputs to represent four different states, while direct detection is used to map the four states to the corresponding binary output. Experiments are successfully carried out to realize 4 basic logic gates at the data rate of 1Gbit/s.
{"title":"Reconfigurable optical logic gate of AND, OR, NAND and NOR based on polarization modulation with direct detection","authors":"Z. Fang, Xianfeng Tang, Y. Zhai, Xiaoguang Zhang, Lixia Xi, Wenbo Zhang","doi":"10.1109/CLEOPR.2017.8118936","DOIUrl":"https://doi.org/10.1109/CLEOPR.2017.8118936","url":null,"abstract":"We propose a new scheme to realize optical logic gates using polarization addition with direct detection. Two polarizations of the optical signal are modulated respectively by two binary inputs to represent four different states, while direct detection is used to map the four states to the corresponding binary output. Experiments are successfully carried out to realize 4 basic logic gates at the data rate of 1Gbit/s.","PeriodicalId":6655,"journal":{"name":"2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)","volume":"20 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72773537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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