Patent ID: 6941073

Claim:
A East-West separable Reconfigurable Optical Add/Drop Multiplexer, optically coupled to a plurality of fibers in a plurality of fiber arrays, the East-West separable ROADM comprising: a plurality of first cylindrical lenses positioned to collimate in a first axis an optical signal provided by a corresponding optical fiber in a first fiber array forming a first axis collimated optical signal; a second cylindrical lens positioned to collimate in a second axis the first axis collimated optical signal to form a first multi-axis collimated optical signal; a first wavelength separating medium angularly diffracting light incident to the wavelength separating medium into a plurality of angularly diffracted light signals, the wavelength separating medium positioned to have incident thereon the multi-axis collimated optical signal; a third lens positioned to focus the plurality of angularly diffracted light signals; a first plurality of transmissive beam directors in a beam director array optically between the first wavelength separating medium and a first plurality of beam reflectors in a beam reflector array; the first plurality of beam reflectors in the beam reflector array comprised of at least one beam reflector positionable to reflect at least some of the angularly diffracted light; an anamorphic relay lens positioned to focus the plurality of angularly diffracted light signals; a second plurality of transmissive beam directors in a beam director array optically between the second wavelength separating medium and a second plurality of beam reflectors in a beam reflector array; the plurality of second beam reflectors in the beam reflector array comprised of at least one beam reflector positionable to reflect at least some of the angularly diffracted light; a fourth lens positioned to collimate the plurality of angularly diffracted light signals into a second multi-axis collimated optical signal; a second wavelength separating medium angularly diffracting light incident to the wavelength separating medium, the wavelength separating medium positioned to have incident thereon the second multi-axis collimated optical signal; a fifth cylindrical lens positioned to focus in the second axis the second multi-axis collimated optical signal; a plurality of sixth cylindrical lenses positioned to focus in the first axis the second multi-axis collimated optical signal.