Patent ID: 9485046
Filing Date: 2016-11-01
CPC Classification: G02B,H04J,H04Q

Claim Text:
1. An apparatus comprising: one of a passive wavelength division multiplexing (WDM) demultiplexer (DeMUX) and a passive WDM multiplexer (MUX); one of an active photo diode (PD) array and an active laser diode (LD) array; a compressing device disposed between said one of a passive WDM DeMUX and a passive WDM MUX and said one of an active PD array and an active LD array; wherein the compressing device changes an optical spot pitch of said one of a passive WDM DeMUX and a passive WDM MUX to match a pitch of said one of an active PD array and an active LD array; and wherein a compression ratio can be adjusted by changing an incident angle of an incident beam to the compressing device; wherein the compressing device is a single optical wedge; and wherein the compression ratio can be adjusted by changing the incident angle of the incident beam to the single optical wedge according to equation: where η is the compression ratio, β is the incident angle, α is an apex angle of the single optical wedge, and n is a refractive index of the single optical wedge.