Session Index

Optical Waveguides and Communications

Optical Waveguides and Communications S
Friday, Dec. 4, 2020  13:10-15:40
Presider: Prof. Chi-Wai Chow
Room: 6AB Room 227
13:10 - 13:40 Manuscript ID.  0828
Paper No.  2020-FRI-L0203-I001
Invited Speaker:
Yung-Jr Hung

Fabrication-tolerant silicon photonics cascaded MachZehnder interferometers for WDM (de)multiplexing
Yung-Jr Hung;Tzu-Hsiang Yen;Tai-Chun Wang;Chia-Chen Chou;Zhan-Wen Song

Four-channel 20-nm-spaced WDM (de)multiplexer based on fabrication-tolerant
cascaded Mach-Zehnder interferometer configuration is demonstrated. Such unique device
design greatly reduces the process-induced spectral shift from 15 nm to <1 nm, verifying the
efficacy of the proposed design methodology for practical WDM applications.

13:40 - 14:10 Manuscript ID.  0833
Paper No.  2020-FRI-L0203-I002
Invited Speaker:
Yinchieh Lai

Microwave Photonics and Silicon Photonics Integrated Technologies and Applications
Yinchieh Lai;Jyehong Chen;Jin-Wei Shi;Chun-Ting Lin;Yi-Jen Chiu

Our recent research progresses on the integrated technologies and applications of microwave photonics and silicon photonics will be reviewed, including the development of new photonic components/modules as well as system applications.

14:10 - 14:25 Manuscript ID.  0532
Paper No.  2020-FRI-L0203-O001
Nai-Hsiang Sun
Analysis of Fiber Bragg Gratings with Two-Grating Sections by Floquet-Bloch Theory
Nai-Hsiang Sun;Yu-Cheng Hsueh;Jung-Sheng Chiang

The reflectivity of fiber Bragg gratings with two-grating sections, consisting of two grating periods, is simulated. When the difference of two gratings periods is 0.000014μm, the reflectivity spectrum of FBGs presents similarity of the reflectivity of two single-gratings FBGs except for the phase shift phenomenon.

14:25 - 14:40 Manuscript ID.  0033
Paper No.  2020-FRI-L0203-O002
Shuo-Yen Tseng
Polarization Independent Silicon-on-Insulator 3-dB Couplers using Adiabaticity Engineering
Yi-Lin Wu;Guan-Xun Lu;Shuo-Yen Tseng

By engineering the adiabaticity distribution using a single control parameter, we obtain shortcuts to adiabaticity (STA) in optical waveguides for multimode systems. The strategy is applied to the design of a polarization-independent 3-dB coupler based on silicon. The coupler has high tolerance to fabrication errors and an ultra-broad bandwidth.

14:40 - 15:10 Manuscript ID.  0835
Paper No.  2020-FRI-L0203-I003
Invited Speaker:
Tien-Tsorng Shih

1.6Tb/s Silicon Photonics Transmitting Chip and Receiving Chip
Tien-Tsorng Shih;Ding-Wei Huang;Chao-Hsin Wu;Jian-Jang Huang;Gong-Ru Lin;Yaw-Dong Wu;Po-Jui Chiang;Shu-Wei Chang;Hao-Chung Kuo;Jau-Ji Jou;Chun-Nien Liu;Shuo-Yen Tseng;Ting-Jen Hsueh

Due to the huge demand of Internet of Things (IOT) and cloud service, the transmission capacity inside the data center is highly required. The 100Gb/s transmission is deployed widely and the 400Gb/s transmission is growing inside the data center. Moreover, the solution of 800Gb/s transmission is discussing now. To achieve the bandwidth requirement, a novel transmission structure of four wavelengths (λ) by four single mode fibers (SMF) is proposed and the aggregated transmission capacity is up to 1.6Tb/s to satisfy the bandwidth demand of data center in the next decade. To realize this novel idea, the silicon photonics technology is the best candidate due to the advantage of integration. In this presentation, a silicon photonics transmitting (Tx) chip by integrated more than forty devices is designed. Total sixteen optimized Mach-Zenhder Modulators (MZM) are built and a special 4x16 Array Waveguide (AWG) Optical Multiplexer is included in the Tx chip. External high power DFB laser diodes are packaged by the edge to inject the light into the Tx chip. The total optical loss is around 30dB which will be improved by a further process and structure optimization. A single MZM is tested to demonstrate the 100Gb/s PAM4 transmission. In the receiving side, sixteen Ge photodiodes is integrated on the silicon photonics receiving chip. At the end of four 1x4 AWG optical De-multiplexers. A 50GHz bandwidth of the Ge photodiode is measured to ensure the 100Gb/s PAM4 receiving. In general, the feasibility of this novel 4λ x 4 SMF transmission structure and the possibility of this Tx optical engine and Rx optical engine are shown and will be a potential candidate in the future data center in the next decade.

15:10 - 15:40 Manuscript ID.  0837
Paper No.  2020-FRI-L0203-I004
Invited Speaker:
Ming-Chang Lee

Integrated Si Photonics for Implementing mmWave FiberWireless Phased Array Antenna
Chen-Yu Wu;Shen-Chen Tsai;Jin-Wei Hsu;Yu-Wei Cheng;Chia-Chan Tsai;Wen-Jie Huang;The Anh Nguyen;Hsiang-Chih Kao;Yi-Chun Liu;Kai-Ming Feng;Ming-Chang Lee

A miniaturized mmWave fiber-wireless phased array antenna implemented by heterogeneous integration of Si photonics, CMOS RF circuits and patch antenna array is presented for 5G mobile communication. We demonstrate a 28-GHz, 16-QAM OFDM signal transmitted through this module with EVM 9.52%.