Session Index

Optical Waveguides and Communications

Optical Waveguides
Thursday, Dec. 7, 2017  15:15-17:00
Presider: Wen-Feng Liu;Nai-Hsiang Sun
Room: International Research Building IR1001(1F)
15:15 - 15:45 Paper No.  2017-THU-S0202-I001
Invited Speaker:
Morten Ibsen
Optical Signal-generation, -control and -manipulation with Periodic All-fibre Devices
Morten Ibsen

The concept of periodic fibre devices typically cover structures that are periodic in refractive index (fibre Bragg gratings and long period fibre gratings), or nonlinearity ( (2) fibre gratings). We will discuss the latest advances in the use of either of these fibre device-concepts for controlling and manipulating the phase and amplitude properties of light. We will discuss examples of grating designs to generate highly coherent light with very narrow linewidth, typically sub-kHz, for applications requiring low noise and long coherence length. We will also demonstrate grating designs capable of achieving wavelength-conversion well in excess of 100nm and designs for generating efficient frequency doubling to reach wavelength bands that are not readily available from the use of conventional rare-earth doped systems. With the efficiency of the device concepts to some extent relying on the nonlinearity of the host material, we will also discuss some possible future directions of these device concepts as their designs migrate from being formed in silica based fibres into more exotic material platforms such as chalcogenides, fluorides and tellurites.

15:45 - 16:00 Paper No.  2017-THU-S0202-O001
Nai-Wen Cheng Award Candidate Graphene oxide/silicon hybrid waveguide sampled gratings
Nai-Wen Cheng;Ya-Ching Liang;Jia-Jin Lin;Tzu-Hsiang Yen;Yung-Jr Hung

Sampled gratings made of graphene oxide are firstly implemented by double-exposure laser interference lithography followed by its transfer onto a silicon strip waveguide to achieve a hybrid waveguide filter, which provides multiple stopbands in the transmission spectrum with a bandwidth of 2 nm and adjustable free spectral ranges.

16:00 - 16:15 Paper No.  2017-THU-S0202-O002
Ho-Nien Wang Award Candidate Simultaneous Measurement of Temperature and Refractive Index by Using A Coaxial-Fiber-Based Fabry-Pérot Interferometer and A Fiber Bragg Grating
Ho-Nien Wang;Chi-Lun Yeh;Hung-Ying Chang;Wen-Fung Liu;Chin-Ping Yu

A bi-parameter sensor combining a coaxial-fiber-based Fabry-Pérot interferometer (FPI) with a fiber Bragg grating (FBG) has been presented. The sensing properties to temperature and refractive index of the coaxial-fiber-based FPI and FBG can be successfully obtained to construct the sensitivity matrix for bi-parameter sensing.

16:15 - 16:30 Paper No.  2017-THU-S0202-O003
Zhong-Ying Li Award Candidate Short and Broadband 3-dB Coupler on SOI Rib Waveguides using Fast Quasiadiabatic Dynamics
Zhong-Ying Li;Hung-Ching Chung;Shuo-Yen Tseng

We present a short and broadband 3-dB splitter based on silicon-on-insulator rib waveguides. The tapered couplers are designed using fast quasiadiabatic dynamics protocol to homogeneously distribute adiabaticity over the length. Our simulations show that the 56 μm long 50/50 coupler has high tolerance to fabrication errors and 300 nm bandwidth.

16:30 - 16:45 Paper No.  2017-THU-S0202-O004
Jyun-Yan Siao Award Candidate Side-open Fiber-optic Fabry-Pérot Interferometer Sensor Based on Etched Beveled Multi-mode Fiber
Jyun-Yan Siao;Chin-Ping Yu

A highly sensitive side-open fiber-optic Fabry-Pérot interferometer sensor is fabricated by splicing an etched beveled MMF with a SMF. One can easily fill the measured samples into the open cavity structure. The measured high refractive index sensitivity is 1151.7 nm/RIU with a very low temperature response of -2.5 pm/°C.

16:45 - 17:00 Paper No.  2017-THU-S0202-O005
You-Cheng Lu Award Candidate Phase uncertainty in submicron silicon nanophotonic waveguide gratings
You-Cheng Lu;Tzu-Hsiang Yen;Siou-Cih Du;Yung-Jr Hung

We report a phase variation induced arm difference of ±1.52 m/mm in balanced MZIs and ±1.95 m/mm of additional arm difference when the sidewall gratings are applied on silicon strip waveguides. This is an important information for constructing on-chip MZI-based add-drop multiplexers.