Patent ID: 6793410
Filing Date: 2004-09-21
Classification: G02B,H01L

Abstract:
An optical communications module comprising:M photodiodes (PDs) for receiving transmitted optical signals wherein M>=1; an insulating, opaque upper case with floor holes for holding the M photodiodes; a bench; M lightwaveguides formed in parallel on the bench; M laser diodes (LDs) mounted at ends of the M lightwaveguides for generating transmitting optical signals; a wavelength division multiplexer (WDM) filter slantingly mounted midway in the M lightwaveguides on the bench; an optical connector; M optical fibers connected to the M lightwaveguides at M ends and held in the optical connector; and an insulating lower case supporting the optical connector and the bench with the m lightwaveguides and the m laser diodes (lds) in series and being unified with the upper case in a vertical direction, the WDM filter allowing the transmitting optical signals being emitted from the M LDs and propagating in the M lightwaveguides to pass through to the M optical fibers in the lower case and reflecting the receiving optical signals propagating from the M optical fibers slantingly upward via the floor holes to the M photodiodes in the upper case.