Optical waveguides – With optical coupler
Patent
1997-09-04
2000-04-11
Palmer, Phan T. H.
Optical waveguides
With optical coupler
385 37, 385 46, 385 24, G02B 642
Patent
active
060496401
ABSTRACT:
A Wavelength-Division-Multiplexer (WDM) cross-connect is implemented using two connected units of angular dispersive elements, with non-zero relative phase shifts between the elements, which are interconnected using controllable phase shifters. Another embodiment uses two "interleave-chirped" waveguide grating routers connected by waveguides with phase shifters. The phase shifters can be selectively controlled enabling the WDM to be reconfigureable. Yet another embodiment recognizes the symmetrical property of the WDM cross-connect and uses a reflector unit to replace one half of the WDM cross-connect.
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patent: 5841919 (1998-11-01), Akiba et al.
patent: 5913000 (1999-06-01), Doerr et al.
K. Okamoto, et al, "16-channel optical add/drop multiplexer consisting of arrayed-waveguide gratings and double-gate switches", Elec. Letters, vol. 32, Aug. 1, 1996, pp. 1471-147291.
C. G. M. Vreeburg, et al, "First InP-Based Reconfigurable Intergrated Add-Drop Multiplexer", IEEE Photonics Tech. Letters, vol. 9, No. 2, Feb. 1997, pp. 188-190.
B. Glance, "Tunable Add/Drop Optical Filter Providing Arbitrary Channel Arrangements", IEEE Photonics Tech. Letters, vol. 7, No. 11, Nov. 1995, pp. 1303-1305.
Lucent Technologies - Inc.
Palmer Phan T. H.
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