The architecture of the ROADM is such that dropping or adding wavelengths does not interrupt the ' pass-through ' channels.

In fiberoptics, a reconfigurable optical add-drop multiplexer ( ROADM ) is a form of optical add-drop multiplexer that adds the ability to remotely switch traffic from a WDM system at the wavelength layer.

With a ROADM, network operators can remotely reconfigure the multiplexer by sending soft commands.

The configuration can be done as and when required without affecting traffic already passing the ROADM.

The switching or reconfiguration functions of a ROADM can be achieved using a variety of switching technologies including MEMS, Liquid crystal, thermo optic and beam-steering switches in planar waveguide circuits, and tunable optical filter technology.

* ROADM allows for remote configuration and reconfiguration.

ROADM functionality originally appeared in long-haul DWDM equipment, but by 2005, it began to appear in metro optical systems because of the need to build out major metropolitan networks in order to deal with the traffic driven by the increasing demand for packet-based services.

Transport – Multi-service provisioning and transport platforms from access to core, supporting legacy TDM / packet technology to IP / MPLS functionality, fully integrated with WDM / ROADM optics.

This is puzzling to an outsider conscious of the classic tradition of liberalism, because it is clear that these Democrats who are left-of-center are at opposite poles from the liberal Jefferson, who held that the best government was the least government.

It is clear that, while most writers enjoy picturing the Negro as a woolly-headed, humble old agrarian who mutters `` yassuhs '' and `` sho' nufs '' with blissful deference to his white employer ( or, in Old South terms, `` massuh '' ), this stereotype is doomed to become in reality as obsolete as Caldwell's Lester.

This is clear.

This confession serves to make clear in part what is behind this sexual revolution: the craving for sensation for its own sake, the need for change, for new experiences.

Experience is not seen, as it is in classical rationalism, as presenting us initially with clear and distinct objects simply located in space and registering their character, movements, and changes on the tabula rasa of an uninvolved intellect.

In this respect experience is broader and full of a richer variety of potential meanings than the mind of man or any of his arts or culture are capable of making clear and distinct.

and it is surely clear that the first of these is the result of the way in which the individual's command of language interacts with the other two.

This is clear when one distinguishes the types of motion appropriate to both regions.

The formal position of Americans who identify themselves with one or more of the several identities of the Jewish symbol is already clear ; ;

How literature does this, or for whom, is certainly not clear, but the content, form, and language of the `` message '', as well as the source, would all play differentiated parts in giving and molding a sense of purpose.

There is a clear relationship between their educational evaluations and their basic pattern of general values.

Therefore, it is plain that the clear distinctions of the nineteenth century are no longer with us.

While it is hazardous to project the trend of history, it seems clear that a genuine community is painfully emerging in the Western world, particularly among the countries of Western Europe.

Even in these cases we should promote self-help by making it clear that our supporting assistance is subject to reduction and ultimately to termination.

It is not clear, however, whether they are thinking of all movable property or only of boats, trailers, aircraft or certain other types of personal property whose assessment would be advantageous to their particular towns.

The haphazard fiscal year calendar is an obstacle to the planning of clear and efficient state-local revenue and expenditure relationships.

As mentioned, the primary allocation objective to be followed in the allocation of stations on clear channels is the provision of widespread service, free from destructive interference.

And the reason this could happen is clear: men of government, business men, lawyers and all who concerned themselves with the welfare of their fellow men did not let their concern to run their businesses at a profit restrict the development of freedom and opportunity.

The outlook for entertainment electronics in 1961 is certainly far from clear at present, but recent surveys have shown a desire on the part of consumers to step up their buying plans for durable goods.

If the lever is pulled to clear a signal or move a switch, the tappet moves a short distance lengthwise at the same time.

These are often accepted as random selections because the number of words has not been calculated beforehand, so the result is unknown right up until someone is selected.

It means that a particular approximation is rigorously defined on first principles ( quantum theory ) and then solved within an error margin that is qualitatively known beforehand.

In competition, divers must submit their lists beforehand, and once past a deadline ( usually when the event is announced or shortly before it begins ) they cannot change their dives.

* A priori knowledge is knowledge that is known independently of experience ( that is, it is non-empirical, or arrived at beforehand, usually by reason ).

Expeditions by Ezana into the Kingdom of Kush at Meroe in Sudan may have brought about its demise, though there is evidence that the kingdom was experiencing a period of decline beforehand.

To understand what is going on in both these films, the audience had to know their stories beforehand, or be told them by a presenter.

A psychological evaluation is required beforehand in all cases.

The Italian language adopted by the state after the unification of Italy is based on the Tuscan, which beforehand was a language spoken mostly by the upper class of Florentine society.

Divergences between the passage's presentation and the Biblical accounts of John include baptism for those whose souls have already been " purified beforehand by righteousness " is for purification of the body, not general repentance of sin ( Mark 1: 4 ).

There is another interpretation, however, according to which these ostraka were prepared beforehand by enterprising businessmen who offered to them for sale to citizens who could not easily inscribe the desired names for themselves or who simply wished to save time.

When he rewrote Radio Free Albemuth as VALIS beforehand, Dick incorporated the plotline of Radio Free Albemuth as a backdrop film ( also titled VALIS ) that recapitulated the central theological and existential concerns of his novel as a mise en abyme-that is, a miniature copy of his central preoccupations at this stage of his literary career, common to both works.

A surprise party is a party that is not made known beforehand to the person in whose honor it is being held.

The reader eats with the servers after the rest have finished, but he is allowed a little food beforehand in order to lessen the fatigue of reading.

If the temperature of the environment is known beforehand, then a thermistor may be used to measure the value of the dissipation constant.

If the system is not changed beforehand, the 2016 General Conference would be in the West, which has not hosted since Denver, Colorado in 1996.

Congressman Leo J. Ryan is assassinated by members of Peoples Temple shortly beforehand.

This variation is useful if it is known beforehand that the constrictor will need to be released.