diff --git a/sonic_platform_base/sonic_xcvr/codes/public/sff8436.py b/sonic_platform_base/sonic_xcvr/codes/public/sff8436.py
index 9cde7095eca2..3d3e041d2c9e 100644
--- a/sonic_platform_base/sonic_xcvr/codes/public/sff8436.py
+++ b/sonic_platform_base/sonic_xcvr/codes/public/sff8436.py
@@ -15,24 +15,24 @@ class Sff8436Codes(Sff8024):
 
     POWER_CLASSES = {
         0: "Power Class 1 Module (1.5W max. Power consumption)",
-        64: "Power Class 2 Module (2.0W max. Power consumption)",
-        128: "Power Class 3 Module (2.5W max. Power consumption)",
-        192: "Power Class 4 Module (3.5W max. Power consumption)",
+        1: "Power Class 2 Module (2.0W max. Power consumption)",
+        2: "Power Class 3 Module (2.5W max. Power consumption)",
+        3: "Power Class 4 Module (3.5W max. Power consumption)",
     }
 
     CLEI_CODE = {
         0: "No CLEI code present in Page 02h",
-        16: "CLEI code present in Page 02h"
+        1: "CLEI code present in Page 02h"
     }
 
     CDR_TX = {
         0: "No CDR in TX",
-        8: "CDR present in TX"
+        1: "CDR present in TX"
     }
 
     CDR_RX = {
         0: "No CDR in RX",
-        4: "CDR present in RX"
+        1: "CDR present in RX"
     }
 
     ETHERNET_10_40G_COMPLIANCE = {
@@ -65,20 +65,20 @@ class Sff8436Codes(Sff8024):
     }
 
     FIBRE_CHANNEL_LINK_LENGTH = {
-        8: "Medium (M)",
-        16: "Long distance (L)",
-        32: "Intermediate distance (I)",
-        64: "Short distance (S)",
-        128: "Very long distance (V)"
+        1: "Medium (M)",
+        2: "Long distance (L)",
+        4: "Intermediate distance (I)",
+        8: "Short distance (S)",
+        16: "Very long distance (V)"
     }
 
     FIBRE_CHANNEL_TRANSMITTER_TECH = {
-        16: "Longwave Laser (LL)",
-        32: "Shortwave laser w OFC (SL)",
-        64: "Shortwave laser w/o OFC (SN)",
-        128: "Electrical intra-enclosure",
-        256: "Electrical inter-enclosure (EN)",
-        512: "Longwave laser (LC)"
+        1: "Longwave Laser (LL)",
+        2: "Shortwave laser w OFC (SL)",
+        4: "Shortwave laser w/o OFC (SN)",
+        8: "Electrical intra-enclosure",
+        16: "Electrical inter-enclosure (EN)",
+        32: "Longwave laser (LC)"
     }
 
     FIBRE_CHANNEL_TRANSMISSION_MEDIA = {
diff --git a/sonic_platform_base/sonic_xcvr/codes/public/sff8472.py b/sonic_platform_base/sonic_xcvr/codes/public/sff8472.py
index 596f20377fd2..832ae75e232e 100644
--- a/sonic_platform_base/sonic_xcvr/codes/public/sff8472.py
+++ b/sonic_platform_base/sonic_xcvr/codes/public/sff8472.py
@@ -37,15 +37,15 @@ class Sff8472Codes(Sff8024):
         192: "Power Class 4 Module (3.5W max.)",
         193: "Power Class 5 Module (4.0W max.)",
         194: "Power Class 6 Module (4.5W max.)",
-        197: "Power Class 7 Module (5.0W max.)",
+        195: "Power Class 7 Module (5.0W max.)",
         32: "Power Class 8 Module",
     }
 
     ETHERNET_10G_COMPLIANCE = {
-        16: "10GBASE-SR",
-        32: "10GBASE-LR",
-        64: "10GBASE-LRM",
-        128: "10GBASE-ER",
+        1: "10GBASE-SR",
+        2: "10GBASE-LR",
+        4: "10GBASE-LRM",
+        8: "10GBASE-ER",
     }
 
     INFINIBAND_COMPLIANCE = {
@@ -56,8 +56,8 @@ class Sff8472Codes(Sff8024):
     }
 
     ESCON_COMPLIANCE = {
-        128: "ESCON MMF, 1310nm LED",
-        64: "ESCON SMF, 1310nm Laser"
+        2: "ESCON MMF, 1310nm LED",
+        1: "ESCON SMF, 1310nm Laser"
     }
 
     SONET_COMPLIANCE = {
@@ -87,21 +87,21 @@ class Sff8472Codes(Sff8024):
     }
 
     FIBRE_CHANNEL_LINK_LENGTH = {
-        8: "Medium (M)",
-        16: "Long distance (L)",
-        32: "Intermediate distance (I)",
-        64: "Short distance (S)",
-        128: "Very long distance (V)"
+        1: "Medium (M)",
+        2: "Long distance (L)",
+        4: "Intermediate distance (I)",
+        8: "Short distance (S)",
+        16: "Very long distance (V)"
     }
 
     FIBRE_CHANNEL_TRANSMITTER_TECH = {
-        16: "Longwave Laser (LL)",
-        32: "Shortwave laser w OFC (SL)",
-        64: "Shortwave laser w/o OFC (SN)",
-        128: "Electrical intra-enclosure (EL)",
-        256: "Electrical inter-enclosure (EL)",
-        512: "Longwave laser (LC)",
-        1024: "Shortwave laser, linear RX (SA)"
+        1: "Longwave Laser (LL)",
+        2: "Shortwave laser w OFC (SL)",
+        4: "Shortwave laser w/o OFC (SN)",
+        8: "Electrical intra-enclosure (EL)",
+        16: "Electrical inter-enclosure (EL)",
+        32: "Longwave laser (LC)",
+        64: "Shortwave laser, linear RX (SA)"
     }
 
     SFP_CABLE_TECH = {
diff --git a/sonic_platform_base/sonic_xcvr/codes/public/sff8636.py b/sonic_platform_base/sonic_xcvr/codes/public/sff8636.py
index 02bed149d952..3347bda9237e 100644
--- a/sonic_platform_base/sonic_xcvr/codes/public/sff8636.py
+++ b/sonic_platform_base/sonic_xcvr/codes/public/sff8636.py
@@ -32,7 +32,7 @@ class Sff8636Codes(Sff8024):
         192: "Power Class 4 Module (3.5W max.)",
         193: "Power Class 5 Module (4.0W max.)",
         194: "Power Class 6 Module (4.5W max.)",
-        197: "Power Class 7 Module (5.0W max.)",
+        195: "Power Class 7 Module (5.0W max.)",
         32: "Power Class 8 Module",
     }
 
@@ -91,12 +91,12 @@ class Sff8636Codes(Sff8024):
     }
 
     FIBRE_CHANNEL_TRANSMITTER_TECH = {
-        16: "Longwave Laser (LL)",
-        32: "Shortwave laser w OFC (SL)",
-        64: "Shortwave laser w/o OFC (SN)",
-        128: "Electrical intra-enclosure",
-        256: "Electrical inter-enclosure (EN)",
-        512: "Longwave laser (LC)"
+        1: "Longwave Laser (LL)",
+        2: "Shortwave laser w OFC (SL)",
+        4: "Shortwave laser w/o OFC (SN)",
+        8: "Electrical intra-enclosure",
+        16: "Electrical inter-enclosure (EN)",
+        32: "Longwave laser (LC)"
     }
 
     FIBRE_CHANNEL_TRANSMISSION_MEDIA = {
diff --git a/sonic_platform_base/sonic_xcvr/mem_maps/public/sff8436.py b/sonic_platform_base/sonic_xcvr/mem_maps/public/sff8436.py
index 0e01b1b2bc3a..37a304d5d418 100644
--- a/sonic_platform_base/sonic_xcvr/mem_maps/public/sff8436.py
+++ b/sonic_platform_base/sonic_xcvr/mem_maps/public/sff8436.py
@@ -48,8 +48,8 @@ def __init__(self, codes):
                     *(RegBitField("%s_%d" % (consts.FIBRE_CHANNEL_LINK_LENGTH_FIELD, bit), bit) for bit in range(3, 8))
                 ),
                 CodeRegField(consts.FIBRE_CHANNEL_TRANSMITTER_TECH_FIELD, self.get_addr(0, 135), self.codes.FIBRE_CHANNEL_TRANSMITTER_TECH,
-                    *(RegBitField("%s_%d" % (consts.FIBRE_CHANNEL_TRANSMITTER_TECH_FIELD, bit), bit) for bit in list(range(0,3)) + list(range(8, 16))),
-                    size=2, format="<H"
+                    *(RegBitField("%s_%d" % (consts.FIBRE_CHANNEL_TRANSMITTER_TECH_FIELD, bit), bit) for bit in range(4, 11)),
+                    size=2, format=">H"
                 ),
                 CodeRegField(consts.FIBRE_CHANNEL_TRANSMISSION_MEDIA_FIELD, self.get_addr(0, 137), self.codes.FIBRE_CHANNEL_TRANSMISSION_MEDIA),
                 CodeRegField(consts.FIBRE_CHANNEL_SPEED_FIELD, self.get_addr(0, 138), self.codes.FIBRE_CHANNEL_SPEED),
@@ -139,4 +139,4 @@ def __init__(self, codes):
         )
 
     def get_addr(self, page, offset, page_size=128):
-        return page * page_size + offset
\ No newline at end of file
+        return page * page_size + offset
diff --git a/sonic_platform_base/sonic_xcvr/mem_maps/public/sff8636.py b/sonic_platform_base/sonic_xcvr/mem_maps/public/sff8636.py
index 8e90eb43858c..2a903287766b 100644
--- a/sonic_platform_base/sonic_xcvr/mem_maps/public/sff8636.py
+++ b/sonic_platform_base/sonic_xcvr/mem_maps/public/sff8636.py
@@ -58,8 +58,8 @@ def __init__(self, codes):
                     *(RegBitField("%s_%d" % (consts.FIBRE_CHANNEL_LINK_LENGTH_FIELD, bit), bit) for bit in range(3, 8))
                 ),
                 CodeRegField(consts.FIBRE_CHANNEL_TRANSMITTER_TECH_FIELD, self.get_addr(0, 135), self.codes.FIBRE_CHANNEL_TRANSMITTER_TECH,
-                    *(RegBitField("%s_%d" % (consts.FIBRE_CHANNEL_TRANSMITTER_TECH_FIELD, bit), bit) for bit in list(range(0,3)) + list(range(8, 16))),
-                    size=2, format="<H"
+                    *(RegBitField("%s_%d" % (consts.FIBRE_CHANNEL_TRANSMITTER_TECH_FIELD, bit), bit) for bit in range(4, 11)),
+                    size=2, format=">H"
                 ),
                 CodeRegField(consts.FIBRE_CHANNEL_TRANSMISSION_MEDIA_FIELD, self.get_addr(0, 137), self.codes.FIBRE_CHANNEL_TRANSMISSION_MEDIA),
                 CodeRegField(consts.FIBRE_CHANNEL_SPEED_FIELD, self.get_addr(0, 138), self.codes.FIBRE_CHANNEL_SPEED),
diff --git a/tests/sonic_xcvr/test_sff8436.py b/tests/sonic_xcvr/test_sff8436.py
index b75cc41ec36f..54d07f038358 100644
--- a/tests/sonic_xcvr/test_sff8436.py
+++ b/tests/sonic_xcvr/test_sff8436.py
@@ -1,9 +1,12 @@
 from mock import MagicMock, patch
+import pytest
+
 
 from sonic_platform_base.sonic_xcvr.api.public.sff8436 import Sff8436Api
 from sonic_platform_base.sonic_xcvr.codes.public.sff8436 import Sff8436Codes
 from sonic_platform_base.sonic_xcvr.mem_maps.public.sff8436 import Sff8436MemMap
 from sonic_platform_base.sonic_xcvr.xcvr_eeprom import XcvrEeprom
+from sonic_platform_base.sonic_xcvr.fields import consts
 
 class TestSff8436(object):
     codes = Sff8436Codes
@@ -52,6 +55,33 @@ def test_api(self):
         self.api.get_lpmode_support()
         self.api.get_power_override_support()
 
+    @pytest.mark.parametrize("mock_response, expected", [
+        (bytearray([0x0]), "Power Class 1 Module (1.5W max. Power consumption)"),
+        (bytearray([0x40]), "Power Class 2 Module (2.0W max. Power consumption)"),
+        (bytearray([0x80]), "Power Class 3 Module (2.5W max. Power consumption)"),
+        (bytearray([0xC0]), "Power Class 4 Module (3.5W max. Power consumption)")
+    ])
+    def test_power_class(self, mock_response, expected):
+        self.api.xcvr_eeprom.reader = MagicMock()
+        self.api.xcvr_eeprom.reader.return_value = mock_response
+        result = self.api.xcvr_eeprom.read(consts.POWER_CLASS_FIELD)
+        assert result == expected
+
+
+    @pytest.mark.parametrize("mock_response, expected", [
+       (bytearray([0x02, 0x0]), "Longwave laser (LC)"),
+       (bytearray([0x01, 0x0]), "Electrical inter-enclosure (EN)"),
+       (bytearray([0x0, 0x80]), "Electrical intra-enclosure"),
+       (bytearray([0x0, 0x40]), "Shortwave laser w/o OFC (SN)"),
+       (bytearray([0x0, 0x20]), "Shortwave laser w OFC (SL)"),
+       (bytearray([0x0, 0x10]), "Longwave Laser (LL)")
+    ])
+    def test_fiber_channel_transmitter_tech(self, mock_response, expected):
+        self.api.xcvr_eeprom.reader = MagicMock()
+        self.api.xcvr_eeprom.reader.return_value = mock_response
+        result = self.api.xcvr_eeprom.read(consts.FIBRE_CHANNEL_TRANSMITTER_TECH_FIELD)
+        assert result == expected
+
     def test_is_copper(self):
         with patch.object(self.api, 'xcvr_eeprom') as mock_eeprom:
             mock_eeprom.read = MagicMock()
@@ -73,3 +103,4 @@ def test_simulate_copper(self):
             assert not self.api.get_rx_power_support()
             assert not self.api.get_temperature_support()
             assert not self.api.get_voltage_support()
+
diff --git a/tests/sonic_xcvr/test_sff8472.py b/tests/sonic_xcvr/test_sff8472.py
index 617087678d38..add287f0a4fc 100644
--- a/tests/sonic_xcvr/test_sff8472.py
+++ b/tests/sonic_xcvr/test_sff8472.py
@@ -1,5 +1,6 @@
 from mock import MagicMock
 import sys
+import pytest
 
 from sonic_platform_base.sonic_xcvr.api.public.sff8472 import Sff8472Api
 from sonic_platform_base.sonic_xcvr.codes.public.sff8472 import Sff8472Codes
@@ -170,3 +171,18 @@ def test_rx_power(self):
         }
         decoded = rx_power_field.decode(data, **deps)
         assert decoded == 209.713
+
+    @pytest.mark.parametrize("mock_response, expected", [
+        (bytearray([0x04, 0x0]), "Shortwave laser, linear RX (SA)"),
+        (bytearray([0x02, 0x0]), "Longwave laser (LC)"),
+        (bytearray([0x01, 0x0]), "Electrical inter-enclosure (EL)"),
+        (bytearray([0x0, 0x80]), "Electrical intra-enclosure (EL)"),
+        (bytearray([0x0, 0x40]), "Shortwave laser w/o OFC (SN)"),
+        (bytearray([0x0, 0x20]), "Shortwave laser w OFC (SL)"),
+        (bytearray([0x0, 0x10]), "Longwave Laser (LL)")
+    ])
+    def test_fiber_channel_transmitter_tech(self, mock_response, expected):
+        self.api.xcvr_eeprom.reader = MagicMock()
+        self.api.xcvr_eeprom.reader.return_value = mock_response
+        result = self.api.xcvr_eeprom.read(consts.FIBRE_CHANNEL_TRANSMITTER_TECH_FIELD)
+        assert result == expected
diff --git a/tests/sonic_xcvr/test_sff8636.py b/tests/sonic_xcvr/test_sff8636.py
index dbd57fbddb3f..82ea1a7f2bad 100644
--- a/tests/sonic_xcvr/test_sff8636.py
+++ b/tests/sonic_xcvr/test_sff8636.py
@@ -1,9 +1,12 @@
 from mock import MagicMock, patch
+import pytest
+
 
 from sonic_platform_base.sonic_xcvr.api.public.sff8636 import Sff8636Api
 from sonic_platform_base.sonic_xcvr.codes.public.sff8636 import Sff8636Codes
 from sonic_platform_base.sonic_xcvr.mem_maps.public.sff8636 import Sff8636MemMap
 from sonic_platform_base.sonic_xcvr.xcvr_eeprom import XcvrEeprom
+from sonic_platform_base.sonic_xcvr.fields import consts
 
 class TestSff8636(object):
     codes = Sff8636Codes
@@ -52,6 +55,36 @@ def test_api(self):
         self.api.get_lpmode_support()
         self.api.get_power_override_support()
 
+    @pytest.mark.parametrize("mock_response, expected", [
+        (bytearray([0x0]), "Power Class 1 Module (1.5W max.)"),
+        (bytearray([0x40]), "Power Class 2 Module (2.0W max.)"),
+        (bytearray([0x80]), "Power Class 3 Module (2.5W max.)"),
+        (bytearray([0xC0]), "Power Class 4 Module (3.5W max.)"),
+        (bytearray([0xC1]), "Power Class 5 Module (4.0W max.)"),
+        (bytearray([0xC2]), "Power Class 6 Module (4.5W max.)"),
+        (bytearray([0xC3]), "Power Class 7 Module (5.0W max.)"),
+        (bytearray([0x20]), "Power Class 8 Module")
+    ])
+    def test_power_class(self, mock_response, expected):
+        self.api.xcvr_eeprom.reader = MagicMock()
+        self.api.xcvr_eeprom.reader.return_value = mock_response
+        result = self.api.xcvr_eeprom.read(consts.POWER_CLASS_FIELD)
+        assert result == expected
+
+    @pytest.mark.parametrize("mock_response, expected", [
+       (bytearray([0x02, 0x0]), "Longwave laser (LC)"),
+       (bytearray([0x01, 0x0]), "Electrical inter-enclosure (EN)"),
+       (bytearray([0x0, 0x80]), "Electrical intra-enclosure"),
+       (bytearray([0x0, 0x40]), "Shortwave laser w/o OFC (SN)"),
+       (bytearray([0x0, 0x20]), "Shortwave laser w OFC (SL)"),
+       (bytearray([0x0, 0x10]), "Longwave Laser (LL)")
+    ])
+    def test_fiber_channel_transmitter_tech(self, mock_response, expected):
+        self.api.xcvr_eeprom.reader = MagicMock()
+        self.api.xcvr_eeprom.reader.return_value = mock_response
+        result = self.api.xcvr_eeprom.read(consts.FIBRE_CHANNEL_TRANSMITTER_TECH_FIELD)
+        assert result == expected
+
     def test_is_copper(self):
         with patch.object(self.api, 'xcvr_eeprom') as mock_eeprom:
             mock_eeprom.read = MagicMock()
@@ -71,3 +104,4 @@ def test_simulate_copper(self):
             assert not self.api.get_rx_power_support()
             assert not self.api.get_temperature_support()
             assert not self.api.get_voltage_support()
+