公开(公告)号：US20170272164A1

公开(公告)日：2017-09-21

申请号：US15075669

申请日：2016-03-21

Applicant: Cisco Technology, Inc.

Inventor： Marco MAZZINI ,  Matthew Joseph TRAVERSO ,  Mark NOWELL

IPC: H04B10/2581 ,  H04B10/564 ,  H04B10/54 ,  H04B10/079 ,  H04B10/524 ,  H04B10/516 ,  H04B10/66

CPC classification number: H04B10/2581 ,  H04B10/524 ,  H04B10/541 ,  H04B10/67

Abstract: Aspects of the present disclosure provide techniques for spatial filtering of multilevel Pulse Amplitude Modulated (PAM) optical signals. An example method is provided for operations which may be performed by components of an optical network, including but not limited to an optical transceiver. The example method generally includes receiving an optical signal that is pulse amplitude modulated (PAM) to encode information of a network packet as a series of optical signal pulses transmitted via an optical fiber, performing spatial filtering, at a transition from the optical fiber to a receiver, on the optical signal, and performing demodulation of the spatially filtered optical signal to decode the information of the network packet.