Wavelength division multiplexed coupler with low crosstalk betwe

Details Wavelength division multiplexed coupler with low crosstalk betwe Wavelength division multiplexed coupler with low crosstalk betwe

1994-12-21

1996-09-10

Bovernick, Rodney B.

Optical waveguides

With optical coupler

Particular coupling structure

385 11, 385 14, 372703, 359494, G02B 626

Patent

active

055553303

ABSTRACT:
Wavelength division multiplexed couplers are provided with the ends of input and output optical fibers arranged with respect to GRIN lens so that light from one input fiber is directed toward one output fiber with little crosstalk. An integrated wavelength division multiplexed coupler and isolator device useful for connecting fiberoptic amplifiers to pump lasers is also provided with one version of the WDM coupler. The integrated WDM coupler and isolator device has a tap coupler component created by a planar grating which deflects a small portion of the light through the device toward a photodetector circuit for monitoring purposes. The integrated device also may be combined with a laser diode subassembly can be combined to eliminate a pump laser connection for the fiberoptic amplifier.

REFERENCES:
patent: 5082343 (1992-01-01), Coult et al.
patent: 5134621 (1992-07-01), Marshall
patent: 5315431 (1994-05-01), Masuda et al.

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