known methods procedures components and or circuits have not been described in detail in the following description and or claims the terms coupled and or connected along with their derivatives may be used in particular embodiments connected may be used to indicate that two or more elements are in direct physical and or electrical contact with each other coupled may mean that two or more elements are in direct physical and or electrical contact however coupled may also mean that two or more elements may not be in direct contact with each other but yet may still cooperate and or interact with each other furthermore the term u201c and or u201d may mean u201c and u201d it may mean u201c or u201d it may mean u201c exclusive or u201d it may mean u201c one u201d it may mean u201c some but not all u201d it may mean u201c neither u201d and or it may mean u201c both u201d although the scope of claimed subject matter is not limited in this respect referring now to fig1 a diagram of thermally controlled optical filters in accordance with one or more embodiments will be discussed as shown in fig1 a thermally controlled optical filter may generally comprise a hot plate type structure for example a micromachined silicon filter 108 having an optical etalon 112 disposed thereon filter 110 may include a resistive temperature device rtd 118 and heater 116 that.