Fujikura FSM-100M, Инструкция по эксплуатации, Страница: 95 / 193

87
Splice Mode
Parameter Description
θ
Alignment [FSM-100P /P+ Only]
Angle Offset
Sets Angle Offset.
After theta alignment, one fiber rotates to the Angle Offset position:
Selectable between 0 and 360 degrees.
Example: Select 45º to generate a depolarizer, or select 90º degrees to
align the slow axis of one fiber to the fast axis of the other fiber.
Left Fiber / Right Fiber [FSM-100P/P+ Only]
Alignment
Method
Can be set to [PAS] [P-Meter], [EV], [EV Lock] or [OFF].
NOTE 1: [EV] and [EV Lock] are available only with the FSM-100P+.
NOTE 2: A different alignment method can be selected for the right
and left fibers. For example, [PAS] can be selected for the right fiber
and [EV] can be selected for the left fiber.
NOTE 3: When splicing a PM fiber to a non-PM fiber such as SM, it
may be useful to perform θ alignment with the PM fiber. This will help
to provide a consistent and uniform X/Y image of the completed fiber
splice because the PM fiber will always be aligned relative to the
splicer X/Y cameras. There will be no actual benefit for optical quality,
but confusion on a production line may be reduced because of
consistent splice appearance. To perform a splice by this method, select
[PAS] or [EV] for the PM fiber, and select [OFF] for the SM fiber.
NOTE 4: Special [EV Lock] Alignment Method:

[EV Lock] is a special alignment method useful for critical needs.
When [EV Lock] is selected, the End-View system image
processing will be used to analyze the rotational orientation of the
fiber. However, the fiber using [EV Lock] as the [Alignment
Method] will not rotate. It will remain stationary. Instead, the
opposite side fiber will be rotated to match the stationary rotational
position of the [EV Lock] fiber.

Since the fiber with [EV Lock] alignment will not be rotated, the
opposite fiber must be rotated to match. Therefore, [EV Lock] may
be selected for either the right or left fiber,
but not for both fibers.

If [EV Lock] is selected for one fiber, the opposite side fiber may be
aligned to it using [EV] or the [PAS] method

Use of the [EV Lock] can be very beneficial if one fiber has a
component that may be damaged by θ rotation (such as a pump
combiner) or if one fiber has only a short fiber length that cannot
withstand rotational motion for θ alignment. In this case, select [EV
Lock] for the fiber that might be damaged by rotation, and select
another alignment method for the other fiber.