diff --git a/core/api/src/main/java/org/onosproject/net/optical/impl/package-info.java b/core/api/src/main/java/org/onosproject/net/optical/impl/package-info.java
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+++ b/core/api/src/main/java/org/onosproject/net/optical/impl/package-info.java
@@ -0,0 +1,22 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Note: All classes in this package is expected to be instance local, and
+// are not expected to be serialized (by Kryo, etc.)
+/**
+ * Implementation of Optical augmentation classes.
+ */
+package org.onosproject.net.optical.impl;