CC BY
2*
ALT'23
The 30th International Conference on Advanced Laser Technologies
LM-I-21
High-speed integrated optics on the base of fluorinated and composite
polymer materials
V.I. Sokolov, V.Ya. Panchenko
Federal Research Center «Crystallography and Photonics», Russian Academy of Sciences
Moscow, Leninsky ave. 59
email: [email protected]
New optical materials on the base of amorphous fluorine-containing polymers are of great interest for integrated optics and photonics due to their high optical transparency, low refractive index, low index dispersion, chemical and environmental stability, manufacturability. We present the review of new results concerning synthesis of these materials using high-pressure (15 - 16 MPa) technique, development of advanced laser technologies for fabrication of various waveguide elements of integrated photonic circuits, new methods for measuring optical parameters of thin-film polymer light-guiding structures, which were realized in the Federal Research Center «Crystallography and Photonics» recently. These elements include multimode and single-mode polymer waveguides, splitters and directional couplers, waveguide Mach-Zhender interferometers, narrowband waveguide filters with submicron Bragg gratings, optical multiplexers and demultiplexers for DWDM optical fiber networks as well as high - speed optical bus on printed circuit board (PCB) for microprocessor computing systems, Fig. 1.
Waveguide cores 250 |_im
4-Air
<- Cap layer
■<- Buffer layer
<- Adhesion layer
<- PCB
a) ^a»' ' a Mb)
Fig. 1. Array of fluorinated polymer waveguides on PCB (a), electro-optical PCB with high-speed optical bus in computer frame (b).
We report also the results concerning development of active photonic devices: high - speed optical waveguide modulators based on fluorine-containing polymer with electrooptic chromophores in the side-chain, and compact optical waveguide amplifiers for telecommunication C - band 1530 - 1565 nm. The amplifies include single-mode polymer waveguide with embedded fluorinated nanocrystals NaYF4/Yb/Er/Ce possessing enhanced photoluminescence in down-conversion around 1550 nm when pumped by 980 nm laser diode, Fig. 2.
977 nm Pump Laser
Tunable 1.5 pm Signal Laser
1/
OSA
b)
a)
c)
Fig. 2. SEM microphotopraph of polymer waveguide with embedded NaYF4/Yb/Er/Ce nanocrystals on Si/SiO2 waver. Waveguide width is 8 pm (a). Scheme for measuring optical gain. WDM - wavelength division multiplexer, 1 - array of polymer waveguides, 2 - optical spectrum analyser (b). Gain coefficient in the waveguide amplifier of length L = 12 mm at X = 1535 nm versus 980 nm pump power Ppump. The inset shows the input (1)
and output (2) signal spectra at 1535 nm for pump power 85 mW.
The investigations were supported by the Russian Foundation for Basic Research.
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20 30 40 50 60 70 80
P , mW
