Chirped waveguide grating router as a splitter/router

Details Chirped waveguide grating router as a splitter/router Chirped waveguide grating router as a splitter/router

1998-04-20

2000-12-19

Sanghavi, Hemang

Optical waveguides

With optical coupler

Input/output coupler

385 24, 385130, 385 46, 385 48, 359130, G02B 634

Patent

active

061636371

ABSTRACT:
A wavelength-dependent splitter/router is made by chirping a waveguide grating router, such that the path-length difference between pairs of adjacent grating arms is not a constant. With careful design, a device can be fabricated that acts as an optical splitter in one wavelength band and as an optical router in another wavelength band. The invention has applicability in optical networks, because it enables the overlaying of a wavelength-division-multiplexed (WDM) network (which relies on routers) with a broadcast type of network (which relies on splitters).

REFERENCES:
patent: 5546483 (1996-08-01), Inoue et al.
patent: 5845022 (1998-12-01), Doerr
patent: 5926298 (1999-07-01), Li
"Double-Chirping of the Waveguide Grating Router", by C.R. Doerr and C.H. Joyner, IEEE Photonics Technology Letters, vol. 9, No. 6, Jun. 1977, pp. 776-778.
"Chirping of the Waveguide Grating Router for Free-Spectral-Range Mode Selection in the Multifrequency Laser", by C.R. Doerr et al., IEEE Photonics Technology Letters, vol. 8, No. 4, Apr. 1996, pp. 500-502.
"Demonstration and Application of a Monolithic Two-Pons-In-One Device", by Yuan P. Li, TuC.3.4, 22nd European Conference on Optical Communications--ECOC'96, Oslo, pp. 2,123-2.126.
"Silica-Based Arrayed-Waveguide Grating Circuit as Optical Splitter/Router", by Y. Inoue et al., Electronics Letters 27th Apr. 1995, vol. 31, No. 9, pp. 726-727.
"Access PON Using Downstream 1550-nm WDM Routing and Upstream 1300-nm SCMA Combining Through a Fiber-Grating Router", by C.R. Giles et al., IEEE Photonics Technology Letters, vol. 8, No. 11, Nov. 1996, pp. 1549-1551.
"Efficient 1.times.16 Optical Power Splitter Based on InP", by M. Zirngibl et al., Electronics Letters, Jun. 18, 1992, vol. 28 No. 13, pp. 1212-1213.
"Compact Design Waveguide Grating Routers", by T. Brenner, C. H. Joyner and M. Zirngibl, Electronics Letters, Aug. 29, 1996, vol. 32, No. 18, pp. 160-1661.

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