Arrayed-waveguide grating

Details Arrayed-waveguide grating Arrayed-waveguide grating

1997-08-05

1999-08-24

Palmer, Phan T. H.

Optical waveguides

With optical coupler

385 37, 385 46, 385 14, G02B 626, G02B 642

Patent

active

059434520

ABSTRACT:
An arrayed waveguide grating including an input waveguide or input waveguides, an input side slab waveguide lens, arrayed waveguides, an output side slab waveguide lens, and an output waveguide or output waveguides, wherein an optical length of the arrayed waveguides monotonically increases or decreases by a constant value between adjacent waveguides; the arrayed waveguides include an input side waveguide block, an intermediate waveguide block, and an output side waveguide block; the intermediate waveguide block includes at least one fan-formed waveguide block, the fan-formed waveguide block is coaxial, equal in vertical angle, and monotonically increases or decreases by a constant value in radius between adjacent waveguides; and the input side waveguide block and the output side waveguide block are line symmetrical about a bisector of the vertical angle of the intermediate waveguide block.

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"ExtremelyCompact 1.31-1.55 .mu.m Phased Array Duplexer onlnP with -30 dB Crosstalk over 100 nm", 22.sup.nd European Conference on Optical Communication; Sep. 15-19, 1996, Olso Norway; pp. 3.iii -3.134.
Vellekoop et al. "A Small-Size Polarization Splitter Based on a Planar Optical Phased Array" Journal of Lightwave Technology vol. 8, No. 1, Jan. 1990, New York, US, pp. 118-124.
Vellekoop et al. "Four-Channel Integrated-Optic Wavelength Demultiplexer With Weak Polarization Dependence" Journal of Lightwave Technology, vol. 9, No. 3, Mar. 1991, pp. 310-314.
Amersfoort et al. "High Performance 4-Channel PHASAR Wavelength Demultiplexer Integrated with Photodetectors" Proceedings of the European Conference on Optical Communication, Sep. 12-16, 1993, vol. 3, No. CONF 9, pp. 49-52.
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Mestric et al. 1.31-1.55 .mu.m Phased-Array Demultiplexer on InP, IEEE Photonics Technology Letters, vol. 8, No. 5, May 1996, pp. 638-640.

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