Patent ID: 7203421
Filing Date: 2007-04-10
Classification: G02B

Abstract:
1. A multi-channel optical switching system, comprising: an in port for receiving a first multi-channel optical signal; a wavelength separating medium for separating the first multi-channel optical signal into a first plurality of single-channel optical signals and for combining a second plurality of single-channel optical signals into a second multi-channel optical signal; a pass port for transmitting the second multi-channel optical signal; a plurality of add ports for receiving at least one of the second plurality of single-channel optical signals; means for directing at least one of the second plurality of single-channel optical signals on to an optical path directed to the pass port; a lens element in an optical path between the means for directing and the wavelength separating medium; and a mirror for reflecting at least one of the second plurality of single-channel optical signals along an optical path to the means for directing, said mirror disposed with respect to said wavelength separating medium such that the optical path from said plurality of add ports to said means for directing does not include said wavelength separating medium.