Session Index

S3. Quantum and Laser Technology

Quantum and Laser Technology I
Friday, Dec. 2, 2022  13:00-15:00
Presider: Chao-Kuei Lee、Hsu-Hsin Chu
Room: B1 A001
13:00 - 13:15 Award Candidate (Paper Competition)
Manuscript ID.  0171
Paper No.  2022-FRI-S0301-O001
Wen-Yao Tseng Photonic-Crystal Surface-Emitting Lasers Array with Isolation Pattern
Wen-Yao Tseng, Wei-Chih Weng, Chia-Jui Chang, Lih-Ren Chen, Tien-Chang Lu, National Yang Ming Chiao Tung University (Taiwan)

Photonic-crystal surface-emitting laser which has advantages of high power, small divergence angle, circular light output, stable single-mode operation and beam tailoring capability. In order to meet the requirement of outdoor 3D sensing and light detection, further improving of the output power is a matter of consequence. We propose and demonstrate a new way to fabricate PCSEL arrays and analyze the influence of design parameters.

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13:15 - 13:30 Award Candidate (Paper Competition)
Manuscript ID.  0501
Paper No.  2022-FRI-S0301-O002
Tien-Dat Pham Generation and manipulation of photon pairs by a four-stage integrated optical circuit
Tien-Dat Pham, Cheng-Chung Chiu, Pin-Ju Tsai, Yen-Hung Chen, National Central University (Taiwan)

We developed a four-stage integrated photonic circuit based on type-0 spontaneous parametric down-conversion (SPDC) and electro-optic (EO) techniques. The chip combines the functions of photon-pair generation, high efficiency polarization mode conversion (PMC), and phase modulation (PM). We systematically verify those functions above and demonstrate their high performance. The developed chip provides a compact and robust platform for generating and manipulating nonclassical light, which has huge potential for application to optical quantum computing and quantum communication.

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13:30 - 13:45 Award Candidate (Paper Competition)
Manuscript ID.  0361
Paper No.  2022-FRI-S0301-O003
Zuhaib Khan Dual Electrodes in 850 nm Coupled Cavity VCSEL array for enhancement of High-Speed Data Transmission
Zuhaib Khan, Min-Long Wu, Cheng-Wei Lin, Jin-Wei Shi, National Central University (Taiwan)

A novel electrode design in compact VCSEL array that effectively enhances high-speed data transmission has been demonstrated. Simultaneously, it exhibits dampened and wider 3-dB E-O bandwidth (18 vs. 14 and 11 vs 9 GHz), better eye-pattern quality and narrow divergence angle (FWHM: 11o and 9o).

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13:45 - 14:00 Award Candidate (Paper Competition)
Manuscript ID.  0765
Paper No.  2022-FRI-S0301-O004
Hsiang-Wei Tseng Passively mode-locked Er-doped fiber laser based on graphene oxide/silk fibroin film
Hsiang-Wei Tseng, Shwu-Yun Tsay, Yao-Hui Chen, Ja-Hon Lin, National Taipei University of Technology (Taiwan)

The passively mode-locked Er-doped fiber lasers (PML-EDFLs) was demonstrated by using graphene oxide/silk fibroin (GO/SF) films as a saturable absorbers. The modulation depth (ΔT) and saturation intensity (Isat) of GO/SF, around 3.63 % and 17.01 MW/cm2, respectively, has been obtained by means of nonlinear optical transmittance measurement. As pump power increases from 154 to 244 mW, the EDFL can be operated at fundamental mode-locked state without pulse splitting. The mode-locked pulses revealed the 824 fs pulse duration τ, 19.06 kHz repetition rate, and near transform limited TBP around 0.326.

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14:00 - 14:15 Award Candidate (Paper Competition)
Manuscript ID.  0461
Paper No.  2022-FRI-S0301-O005
Te-Hua Liu Characteristics of High-speed 1.3 μm DFB Laser for Direct Modulation Applications under Commercial Temperature Range
Te-Hua Liu, Hao-Tien Cheng, Hsiang-Chun Yen, Guei-Ting Hsu, Chao-Hsin Wu, National Taiwan University (Taiwan)

We designed and manufactured a low-cost, high-reliability 1.3 μm DFB for direct modulation applications. The carrier injection efficiency is improved by optimized epi-structure, which further enhances the high-speed characteristics of DFB lasers in high-temperature environments. The threshold current of the DFB laser is less than 10 mA at room temperature, the optical intensity exceeds 20 mW, and the SMSR is greater than 50 dBm. Under high-temperature conditions, the modulation frequency exceeds 17.1 GHz.

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14:15 - 14:30 Award Candidate (Paper Competition)
Manuscript ID.  0252
Paper No.  2022-FRI-S0301-O006
Zhan-Yu Liu High-entropy chaos generation using semiconductor lasers subject to mutual injection for physical random number generation
Zhan-Yu Liu, Chin-Hao Tseng, Department of Photonics (Taiwan); Sheng-Kwang Hwang, Department of Photonics (Taiwan), Advanced Optoelectronic Technology Center (Taiwan)

This study investigates a high-entropy and broad-band chaos generation technique based on two mutually coupled semiconductor lasers for true physical random number generation. The proposed chaotic source can work as a 5-bit physical random bit generator at a rate of 50 Gbps with guaranteed unpredictability.

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14:30 - 14:45 Award Candidate (Paper Competition)
Manuscript ID.  0291
Paper No.  2022-FRI-S0301-O007
Chin-Hao Tseng Photonic microwave generation using period-one dynamics of two mutually coupled semiconductor lasers
Chin-Hao Tseng, Bin-Kai Liao, Sheng-Kwang Hwang, National Cheng Kung University (Taiwan)

We propose a novel all-optical photonic approach for high-frequency microwave generation based on period-one dynamics of two mutually coupled semiconductor lasers under highly asymmetric coupling strength. As a result, a 73.1-GHz microwave with a 3-dB linewidth below 3 kHz and a side-peak-suppression ratio above 45 dB is generated.

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14:45 - 15:00 Award Candidate (Paper Competition)
Manuscript ID.  0064
Paper No.  2022-FRI-S0301-O008
Yi-Jing Wu Vectoral vortex beams generated by photonic-crystal surface-emitting lasers with honeycomb lattice
Yi-Jing Wu, Bing-Hong Chuang, Chia-Jui Chang, Lih-Ren Chen, Tien-Chang Lu, National Yang Ming Chiao Tung University (Taiwan)

We demonstrated the high-order vortex beam with the photonic-crystal surface-emitting lasers (PCSELs) in honeycomb lattice. The laser structure, photonic crystal band diagram, the light-current-voltage (L-I-V) curves and the far-field patterns were presented in this article. Furthermore, the result also contained the vortex analysis, and it showed that the PCSEL had high-order vortex beam with orbital angular momentum l=±2.

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