Disclosed is a method of making InP-based DFB lasers that can reliably mitigate or substantially prevent erosion of the grating during overgrowth. The method comprises contacting, prior to overgrowth, the grating with a sulfurcontaining aqueous medium, e.g., 80 parts by weight H.sub.2 O/20 parts by weight ammonium sulfide.
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机译:公开了一种制造基于InP的DFB激光器的方法,该方法可以可靠地减轻或基本防止在过度生长期间光栅的腐蚀。该方法包括在过度生长之前使格栅与含硫的水性介质,例如80重量份的H 2 O / 20重量份的硫化铵接触。
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