Session Index

Optical Waveguides and Communications

Poster Session II
Saturday, Dec. 5, 2020  10:30-12:30
Presider: Prof. Wen-Jeng Ho
Room: 6AB Courtyard
Manuscript ID.  0007
Paper No.  2020-SAT-P0202-P001
Keh-Yi Lee
Optimizing Direct Coupling between Laser Diode and Channel Waveguide by Shift-or-shrink (SOS) Algorithm
Yi-Xuan Wu;Chien-Hui Chien;Cheng-Hsiao Chung;Chun-Ming Hung;Keh-Yi Lee

The authors derive a formula of computing the direct coupling efficiency from a laser diode to a diffused channel waveguide. Then we utilize a very simple optimization method (shift-or-shrink algorithm) to obtain the optimal coupling conditions. Several cases of the channel waveguides are presented.

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Manuscript ID.  0117
Paper No.  2020-SAT-P0202-P002
Shao-Wei Lu
Regular pulses generated by semiconductor laser subject to both optoelectronic feedback and optical injection
Shao-Wei Lu

In this paper, the regular pulses generated by the pure optoelectronic feedback and the hybrid system are demonstrated and compared experimentally. By applying optical injection combined with the optoelectronic feedback system, the unwanted side peaks of the regular pulses are effectively suppressed. Moreover, the linewidths are also discussed and calculated.

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Manuscript ID.  0642
Paper No.  2020-SAT-P0202-P003
Ming-Fu Liu
Development of Novel All-Fiber Mach-Zehnder Interferometer for Cu ion Detection
Ming-Fu Liu;Yu-Ze Zhang;Meng-Hong Lee;Shug-June Hwang

A Mach-Zehnder interferometer (MZI) sensor, which is constructed by a hollow-core fiber spliced between single mode fibers and functionalized with chitosan/poly(acrylic acid) self-assembled layers for monitoring heavy metal ion copper (II), is proposed and experimentally demonstrated.

Manuscript ID.  0219
Paper No.  2020-SAT-P0202-P004
You-Min Ren
An Accurate Camera Based Positioning System with Reduced Identification Error Applying Ring Marker and Centroid Method
Jiun-Yu Sung;You-Min Ren

A camera based positioning system is studied. The centroid method in combined with target ring markers is applied to reduce the probability of incorrectly identifying non-existing users. 95% positioning accuracy of 0.89 cm and user identification error with only 0.03 times of the case applying LED spot marker is demonstrated.

Manuscript ID.  0271
Paper No.  2020-SAT-P0202-P005
Chia-Wei Lee
The Design of 60 GHz Bandwidth Symmetrical Conducted- Backed Coplanar Waveguide Based on the Single-Layer Drilled Glass Substrate
Chia-Wei Lee;Chien-Liang Chiu

This design of a conducted-backed coplanar waveguide (CBCPW) is used for 60 GHz bandwidth. The CBCPW device is achieved on a single-layer drilled glass structure to obtain the transmission line of the insertion loss S21 of -0.69dB and the reflection loss S11 of -27.76dB.

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Manuscript ID.  0450
Paper No.  2020-SAT-P0202-P006
Yi-Yung Tsai
Polarization Maintaining Negative Curvature Fiber for Terahertz Operation
Yi-Yung Tsai;Chih-Hsien Lai

We propose a terahertz (THz) polarization maintaining fiber which has a negative curvature structure and is geometrically asymmetric. Numerical results demonstrate that the birefringence of the proposed fiber will increase with the diameter of the inner nest.

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Manuscript ID.  0482
Paper No.  2020-SAT-P0202-P007
Zheng-Yuan Chen
Influence of Thermal Effect on Leakage Channel Fibers
Zheng-Yuan Chen;Chih-Hsien Lai

We numerically study the influence of thermal effect on the leakage channel fibers. It is found that the mode area will be reduced when the heat load is considered. Moreover, the mode area is smaller when the leakage channel fiber has a larger air-hole diameter.

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Manuscript ID.  0503
Paper No.  2020-SAT-P0202-P008
Hong-Minh Nguyen
High-Capacity High-Loss-Budget Long-Reach PON Incorporated with Volterra-based Pre-Distortion
Hong-Minh Nguyen;Szu-Chi Huang;Chia-Chien Wei;Chun-Yen Chuang;Jyehong Chen

Employing high launch power and Volterra-based pre-distortion to combat severe fading, loss and nonlinear distortion, we demonstrate a 52-Gbps 60-km LR-PON of 30-dB loss budget without inline or pre-amplifier and digital compensation for nonlinear distortion at ONUs.

Manuscript ID.  0717
Paper No.  2020-SAT-P0202-P009
Si-Yu Huang
Fiber Bragg Grating Low-Frequency AC Magnetic Field Sensor
Si-Yu Huang;Cheng-Yu Lin;Jeson Chen;Wen-Fung Liu

Here we proposed a low-frequency AC magnetic field sensor based on FBG with a magnet. When the sensor is at presence of an external magnetic field, the magnet attached polymer causes shift of the FBG reflection wavelength. Our design is affordable and compact, which is suitable for wide electronic applications.

Manuscript ID.  0683
Paper No.  2020-SAT-P0202-P010
Shen-Chen Chen
Heterogeneous Microdisk Resonators with High Resonant Thermal Stability
Shen-Chen Chen;Yan-Ting Li;Jia-Lun Ho;Tzyy-Jiann Wang

The microdisk resonator made of two oxide materials with positive and negative thermo-optic coefficients is presented with high thermal stability of resonant wavelength. The study upon the dependence of thermal drift rate on the thickness combination shows that the optimal thermal drift rate can be as low as 0.26 pm/ºC.

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Manuscript ID.  0041
Paper No.  2020-SAT-P0202-P011
Jun-Kai Lin
Dispersion Compensating of dual-concentric core photonic crystal fibers
Jun-Kai Lin;Jau-Sheng Wang

This topic mainly uses the theory of dual-concentric core fiber, and the characteristics of index-guiding photonic crystal fiber to design, in which light can pass through the refractive index difference of the medium, and the fiber Structural modification to design a dispersion compensation fiber with ultra-high negative dispersion.

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Manuscript ID.  0529
Paper No.  2020-SAT-P0202-P012
Po-Lun Chen
Dielectric constant and thickness measurement of subwavelength films using a metal-coated plastic woven mesh with unique transmission properties
Po-Lun Chen;Mei-Yueh Guo;Ja-Yu Lu;Borwen You

Terahertz surface resonant waves are generated on metal-coated plastic woven meshes with strong field confinement within the periodically corrugated surfaces. The transmission spectral dips can sensitively be responded to optical constants of samples. The measured detection limits of refractive index and thickness are respectively 0.013 RIU and lambda/653.

Manuscript ID.  0666
Paper No.  2020-SAT-P0202-P013
Ming-Fu Liu
Novel pH Sensor-based on Mach-Zehnder Interferometer Fiber Coated with Chitosan and PAA Bilayers
Ming-Fu Liu;Jian-Hong Lin;Po-Yu Gan;Qi-Jia Hong;Shug-June Hwang

A novel fiber-optic pH sensor based on a unique double-tapered Mach-Zehnder interferometer with multiple bilayers of chitosan and poly(acrylic acid) is proposed. pH responsive chitosan hydrogel coating on the fiber swells/deswells in response to local pH, inducing refractive index changes and then shifting of interference dips in the optical spectrum.

Manuscript ID.  0728
Paper No.  2020-SAT-P0202-P014
Kuei-Huei Lin
Ultra-Broadband Few-Mode Long-Period Fiber Grating for Doughnut Beam Generation
Wen-Hsuan Kuan;Kuei-Huei Lin

Ultra-broadband long-period fiber grating with higher-order mode conversion bandwidth larger than 150 nm is demonstrated, which has been combined with a tunable ytterbium-doped fiber laser to generate optical doughnut beams in the spectral range from 1030.0 nm to 1098.7 nm, and the vector nature of generated optical fields are observed.

Manuscript ID.  0748
Paper No.  2020-SAT-P0202-P015
Wen-Kai Wu
The Gain Characteristic of C-Band Tunable Wavelengths Affected by the Coupling Ratios in Ring Resonator of Erbium-Doped Fiber Laser
Wen-Kai Wu

The C-band tunable wavelength of erbium-doped fiber laser was constructed by a tunable optical filter in the ring resonator. The low and high coupling ratios in the resonator were found to have a large gain corresponding with the short and long wavelength of the C-band, respectively.

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Manuscript ID.  0593
Paper No.  2020-SAT-P0202-P016
Hong-Jie Luo
Tunable Wavelengths and Equalized Optical Powers by Variations of Coupling Ratios in Circular Ring Resonator of Erbium-Doped Fiber Laser
Hong-Jie Luo

Controlling of the different coupling ratios in the circular ring resonator of erbium-doped fiber laser, the nine tunable wavelengths from 1558.900 to 1565.500 nm and the corresponding peak optical powers varied less than 1 dB compared with the average optical power of -13.36 dBm were obtained in this experiment.

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Manuscript ID.  0190
Paper No.  2020-SAT-P0202-P017
Zhi-Xuan Liu
Fiber-Based Resonant Beam System for Optical Wireless Information and Power Transfer System
Zhi-Xuan Liu;Yu-Tang Luo;Hsu-Chih Cheng

This research is based on wireless OWIPT system of resonant beam, using wireless optical communication technology to enable signal and power transfer in free space at the same time. After the resonance effect is achieved, and DC and AC signals are separated to achieve power and signal transfer.

Manuscript ID.  0477
Paper No.  2020-SAT-P0202-P018
Chun-Jui Chen
Compact Silicon Photonics Mode Converter Utilizing the Subwavelength Grating Based Asymmetrical Directional Coupler
Chun-Jui Chen;Pin-Cheng Guo;Pi-Yu Tai;Jui-Feng Tsai;Ching-Wei Peng;Guan-Hong Chen;Chien-Hung Yeh;Chi-Wai Chow

A propose and demonstrate by simulation a compact mode-converter between TE0 and TE1 by utilizing subwavelength-grating-assisted (SWG) asymmetric-directional-coupler (ADC). Results show that the coupling-length can be reduced by 40%.

Manuscript ID.  0707
Paper No.  2020-SAT-P0202-P019
Ting-Heng Wang
DC Voltage Sensor of Fiber Bragg Grating
Ting-Heng Wang;Cheng-Hsuan Tsai;Shih-Hsien Hsu;Wen-Fung Liu

This study proposes a fiber direct-current voltage sensor by means of combining a fiber Bragg grating and piezoelectric transistor. The sensor can be used to detect the DC voltage in the range from 0 to 180 volts.

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Manuscript ID.  0716
Paper No.  2020-SAT-P0202-P020
Yi-Cheng Lin
The Tuning Bandwidth of Tapered Fiber Bragg Grating
Yi-Cheng Lin;Cheng-Yu Lin;Jeson Chen;Wen-Fung Liu

This search is to investigate the tuning grating-bandwidth by applying different tension forces in a TFBG. The tension force from 0.02 to 0.1kgw is applied in five different fiber diameters from 80 to 40μm. In addition, the thermal influence of grating bandwidth from 40°C to 100°C is also investigated.

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Manuscript ID.  0137
Paper No.  2020-SAT-P0202-P021
Guan-Jhang Huang
Radio over Fiber Transport System with Self–Healing Function
Ching-Hung Chang;Guan-Jhang Huang

A hybrid tree and multi–ring radio over fiber transport system is proposed and experimentally demonstrated. With the assistance of a self-composed single-line bidirectional optical add/drop multiplexer and flexible network structure, the transport system can maintain network traffics when multiple fiber link failures occurred.

Manuscript ID.  0569
Paper No.  2020-SAT-P0202-P022
Jhih-Heng Yan
PDM-based Flexible Capacity Management for MMW-RoF Fronthaul with a Polarization Insensitive RU Design
Jhih-Heng Yan;Kuan-Heng Shen;Yu-Yang Lin;Jian-Kai Huang;Chang-Yin Lin;Kai-Ming Feng

We propose and experimentally demonstrate a MIMO-MMW-RoF mobile fronthaul with a polarization insensitive RU design. In the same fronthaul infrastructure, a flexible capacity management can be achieved with two software-level controlled signal stream scenarios.

Manuscript ID.  0519
Paper No.  2020-SAT-P0202-P023
Yun-Shen Lin
Employing Logistic Regression and Data Preprocessing to Demodulate Rolling Shutter Pattern in Optical Camera Communication (OCC)
Yun-Shen Lin;Dong-Chang Lin;Shao-Hua Song;Ke-Ling Hsu;Chien-Hung Yeh;Chi-Wai Chow

We proposed and demonstrated an optical-camera-communication (OCC) employing logistic-regression and data-preprocessing. Experimental result shows that the proposed scheme can improve the bit-error-rate (BER) performance significantly.