Thin film interleaver
First Claim
Patent Images
1. A demultiplexer for use in fiber-optic CWDM applications, the demultiplexer comprising:
- a first stage that comprises a thin film interleaver, the thin film interleaver comprising a thin film portion being formed to exhibit a flat top frequency response, wherein the thin film portion allows a first group of channels to pass through the thin film portion while reflecting a second group of channels, each channel of the first group of channels being adjacent to a channel in the second group of channels; and
at least one subsequent stage that includes two interleavers for receiving the first and second group of channels, each of the two interleavers comprising a fused fiber interleaver.
5 Assignments
0 Petitions
Accused Products
Abstract
A thin film interleaver device is disclosed. The thin film interleaver includes thin film optics. The thin film(s) are formed such that they reflect one group of wavelengths while allowing a second group of wavelengths to pass through the thin film(s). The thin film(s) exhibit a flat top frequency response across the channel bandwidths of the multiplexed signal for which the thin film filter is designed such that the thin film interleaver is less sensitive to wavelength drift and temperature variations.
11 Citations
10 Claims
-
1. A demultiplexer for use in fiber-optic CWDM applications, the demultiplexer comprising:
-
a first stage that comprises a thin film interleaver, the thin film interleaver comprising a thin film portion being formed to exhibit a flat top frequency response, wherein the thin film portion allows a first group of channels to pass through the thin film portion while reflecting a second group of channels, each channel of the first group of channels being adjacent to a channel in the second group of channels; and at least one subsequent stage that includes two interleavers for receiving the first and second group of channels, each of the two interleavers comprising a fused fiber interleaver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A fiber-optic demultiplexer, the demultiplexer comprising:
-
a first stage that comprises a first interleaver formed to exhibit a flat top frequency response, wherein the first interleaver passes a first group of channels through while reflecting a second group of channels, each channel of the first group of channels being adjacent to a channel in the second group of channels; and at least one subsequent stage that includes a second interleaver for receiving one of the first and second groups of channels, the second interleaver formed to exhibit a Gaussian frequency response. - View Dependent Claims (10)
-
Specification