diff --git a/utils/misc/src/main/java/org/onlab/util/Spectrum.java b/utils/misc/src/main/java/org/onlab/util/Spectrum.java
new file mode 100644
index 0000000..42d7609
--- /dev/null
+++ b/utils/misc/src/main/java/org/onlab/util/Spectrum.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2015 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.
+ */
+package org.onlab.util;
+
+/**
+ * Telecom optical wavelength bands: O, E, S, C, L and U bands.
+ *
+ * See ITU-T G-Series Recommendations, Supplement 39
+ */
+public final class Spectrum {
+
+    private Spectrum() {
+    }
+
+    // O band (original): 1260 to 1360 nm
+    public static final Frequency O_BAND_MIN = Frequency.ofTHz(220.436);
+    public static final Frequency O_BAND_MAX = Frequency.ofTHz(237.931);
+
+    // E band (extended): 1360 to 1460 nm
+    public static final Frequency E_BAND_MIN = Frequency.ofTHz(205.337);
+    public static final Frequency E_BAND_MAX = Frequency.ofTHz(220.436);
+
+    // S band (short wavelength): 1460 to 1530 nm
+    public static final Frequency S_BAND_MIN = Frequency.ofTHz(195.943);
+    public static final Frequency S_BAND_MAX = Frequency.ofTHz(205.337);
+
+    // C band (conventional): 1530 to 1565 nm
+    public static final Frequency C_BAND_MIN = Frequency.ofTHz(191.561);
+    public static final Frequency C_BAND_MAX = Frequency.ofTHz(195.943);
+
+    // L band (long wavelength): 1565 to 1625 nm
+    public static final Frequency L_BAND_MIN = Frequency.ofTHz(184.488);
+    public static final Frequency L_BAND_MAX = Frequency.ofTHz(191.561);
+
+    // U band (ultra-long wavelength): 1625 to 1675 nm
+    public static final Frequency U_BAND_MIN = Frequency.ofTHz(178.981);
+    public static final Frequency U_BAND_MAX = Frequency.ofTHz(184.488);
+}