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Variable single-mode attenuators by spatial interference

  • US 6,178,284 B1
  • Filed: 09/30/1998
  • Issued: 01/23/2001
  • Est. Priority Date: 09/30/1998
  • Status: Expired due to Term
First Claim
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1. An attenuator for variably attenuating an optical signal, said attenuator comprising:

  • a plurality of reflective portions for entirely reflecting any portion of an optical signal impinging thereon and thereby generating a plurality of reflected optical signals which are combined as an attenuated optical signal, wherein at least one of said reflective portions is moveable with respect to the rest of said plurality of reflective portions.

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