Optical add/drop module

Details Optical add/drop module Optical add/drop module

2011-08-23

2011-08-23

Lepisto, Ryan (Department: 2883)

Optical waveguides

With optical coupler

Plural

Reexamination Certificate

active

08005328

ABSTRACT:
A WDM add/drop module. The drop portion of the add/drop module is accomplished by using thin film filters or thin film interleavers. The add portion of the add/drop module uses fused fiber interleavers for the less critical stages of the multiplexing process. In a final stage, fused fiber interleavers can be placed in series. A thin film intervleaver having a flattop frequency response may also be used for the critical stage where the multiplexed channels are more closely spaced. The frequency response of the thin film interleaver is relatively constant across a bandwith of a channel while having a drop off at the channel edge to reduce cross talk.

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