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We propose a novel configuration for a tunable optical dispersion compensator (TODC) with increased bandwidth. We demonstrate 40-wavelength channelized compensation for 400-ps/nm chromatic dispersion with a 40-GHz bandwidth using the proposed TODC.
We demonstrated an ultra small 100 GHz 40 ch athermal AWG module based on 2.5%-Delta waveguides. The module is 30 times 10 times 5 mm with an insertion loss of 2.0-2.9 dB.
We propose hybrid AWG-free space focusing optics which is about a half size of the conventional 2-f system. Using this optics, we demonstrate a 40-channel 100-GHz spacing wavelength blocker with the 0.5-dB passband of 76 GHz.
We successfully fabricated a compact AWG-based optical channel monitor (OCM) for a multi-degree ROADM. We also describe a novel OCM configuration with an 8-point x 48-channel monitoring function that uses only a 6-channel monitor PD.
We successfully reduced the PDL of a silica-based PLC-VOA array at an attenuation of 15 dB to 0.3 dB by forming stress-releasing grooves and by employing a cross-path in an asymmetric Mach-Zehnder interferometer.
We demonstrate pulse waveform shaping with a circuit employing an arrayed waveguide grating pair and amplitude-phase controllers. We flexibly synthesized the frequency components of a mode-locked laser to produce 40 GHz square pulses with various widths.
A novel wavelength-selective switch is proposed and demonstrated. The switch has a 1 /spl times/ 4 transversal filter configuration that includes AWGs and thermo-optic phase shifters, and can route input light at an arbitrary wavelength to arbitrary outputs with no loss variation. We confirmed its operating principle and obtained an average loss of 5.7 dB and an average extinction ratio of 27 dB.
We demonstrate an integrated 32ch dynamic wavelength channel selector consisting of an AWG and a 32 /spl times/ 1 switch using PLC technology. The crosstalk is less than -35 dB, we successfully obtained a loss variation of only /spl plusmn/ 0.1 dB.
We developed a compact AWG-based 64 × 64 router module using 1.5%-Δ waveguides. This module provided uniform-loss and cyclic-frequency performance with an insertion loss of 5.4-6.8 dB.
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