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2011
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Gain-flattening filters
Gain-flattening filters → gain equalization
www.bookham.com
Interference filters or Fiber Bragg gratings (FBGs)
Complex design
Sensitive → temperature variations
Active temperature control
Athermic packaging that compensates dilatation
Insertion loss
⇒ Between stages (before input: NF %, after output: P
out
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