diff --git a/core/api/src/main/java/org/onosproject/net/AnnotationKeys.java b/core/api/src/main/java/org/onosproject/net/AnnotationKeys.java
index 00efb4a..4235ed1 100644
--- a/core/api/src/main/java/org/onosproject/net/AnnotationKeys.java
+++ b/core/api/src/main/java/org/onosproject/net/AnnotationKeys.java
@@ -15,6 +15,8 @@
  */
 package org.onosproject.net;
 
+import com.google.common.annotations.Beta;
+
 /**
  * Collection of keys for annotation.
  * <p>
@@ -110,6 +112,18 @@
     public static final String STATIC_LAMBDA = "staticLambda";
 
     /**
+     * Annotation key for optical port's target power.
+     */
+    @Beta
+    public static final String TARGET_POWER = "targetPower";
+
+    /**
+     * Annotation key for optical port's current power.
+     */
+    @Beta
+    public static final String CURRENT_POWER = "currentPower";
+
+    /**
      * Annotation key for the static port.
      */
     public static final String STATIC_PORT = "staticPort";