Simple module to find numerically propagation mode profiles and propagation constants of multimode fibers of arbitrary radial index profiles.
Home Page: http://www.wavefrontshaping.net
License: MIT License
There are two bugs in radial solver that uprise in the example from README.
Also there are broken links in README.
P.S.: The example from an article works good.
Hello!
After running this code on Ubuntu 20.04.4 machine:
import pyMMF
import numpy as np
NA = 0.14
radius = 4.15
areaSize = 3.5*radius
npoints = 2**8
n1 = 1.455
wl = 1.2
profile = pyMMF.IndexProfile(npoints = npoints, areaSize = areaSize)
profile.initStepIndex(n1=n1,a=radius,NA=NA)
solver = pyMMF.propagationModeSolver()
solver.setIndexProfile(profile)
solver.setWL(wl)
modes_semianalytical = solver.solve(mode = 'SI', curvature = None)I'm getting TypeError, full log:
2022-03-22 17:17:45,210 - pyMMF.core [DEBUG ] Debug mode ON.
2022-03-22 17:17:45,210 - pyMMF.solv [INFO ] Finding the propagation constant of step index fiber by numerically solving the dispersion relation.
2022-03-22 17:17:45,291 - pyMMF.solv [INFO ] Found 6 modes in 0.08 seconds.
2022-03-22 17:17:45,291 - pyMMF.solv [INFO ] Finding analytical LP mode profiles associated to the propagation constants.
2022-03-22 17:17:46,489 - pyMMF.core [ERROR ] Uncaught exception
joblib.externals.loky.process_executor._RemoteTraceback:
"""
Traceback (most recent call last):
File "/usr/local/lib/python3.8/dist-packages/joblib/externals/loky/process_executor.py", line 436, in _process_worker
r = call_item()
File "/usr/local/lib/python3.8/dist-packages/joblib/externals/loky/process_executor.py", line 288, in __call__
return self.fn(*self.args, **self.kwargs)
File "/usr/local/lib/python3.8/dist-packages/joblib/_parallel_backends.py", line 595, in __call__
return self.func(*args, **kwargs)
File "/usr/local/lib/python3.8/dist-packages/joblib/parallel.py", line 262, in __call__
return [func(*args, **kwargs)
File "/usr/local/lib/python3.8/dist-packages/joblib/parallel.py", line 262, in <listcomp>
return [func(*args, **kwargs)
File "/usr/local/lib/python3.8/dist-packages/pyMMF/solvers/SI.py", line 130, in calc_mode
psi = np.pi/2 if m[idx] < 0 else 0
TypeError: 'int' object is not subscriptable
"""
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "./find_modes.py", line 36, in <module>
modes_semianalytical = solver.solve(mode = 'SI', curvature = None)
File "/usr/local/lib/python3.8/dist-packages/pyMMF/core.py", line 239, in solve
modes = solve_SI(
File "/usr/local/lib/python3.8/dist-packages/pyMMF/solvers/SI.py", line 21, in solve_SI
modes = associateLPModeProfiles(modes,indexProfile,
File "/usr/local/lib/python3.8/dist-packages/pyMMF/solvers/SI.py", line 170, in associateLPModeProfiles
modes.profiles = Parallel(n_jobs=n_jobs)(
File "/usr/local/lib/python3.8/dist-packages/joblib/parallel.py", line 1056, in __call__
self.retrieve()
File "/usr/local/lib/python3.8/dist-packages/joblib/parallel.py", line 935, in retrieve
self._output.extend(job.get(timeout=self.timeout))
File "/usr/local/lib/python3.8/dist-packages/joblib/_parallel_backends.py", line 542, in wrap_future_result
return future.result(timeout=timeout)
File "/usr/lib/python3.8/concurrent/futures/_base.py", line 444, in result
return self.__get_result()
File "/usr/lib/python3.8/concurrent/futures/_base.py", line 389, in __get_result
raise self._exception
TypeError: 'int' object is not subscriptable
I have:
python 3.8.10
numpy 1.21.5
scipy 1.8.0
numba 0.55.1
llvmlite 0.38.0
joblib 1.1.0
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