If you are stuck on specific problems from the Hunsperger text, use this strategy instead of looking for a zip file:

Problems often ask for the period of a grating ($\Lambda$) to couple light in/out or to reflect a specific wavelength.

import numpy as np
def slab_waveguide_modes(n_core, n_clad, wavelength, thickness):
    k0 = 2*np.pi/wavelength
    # Solve transcendental eq. for TE modes
    # Returns beta, neff
    return neff_list

The phrase "zip" implies a compressed, ready-to-deploy archive. For maximum utility, the solution should be organized into a hierarchical folder structure:

Integrated_Optics_Solution/
├── theory/
│   ├── mode_solvers/ (Python scripts)
│   ├── cmt_models/ (SymPy notebooks)
│   └── references/ (key papers as PDFs)
├── technology/
│   ├── material_db/ (JSON + refractiveindex.info links)
│   ├── process_recipes/ (txt files for etchers/dep tools)
│   └── test_protocols/ (automated alignment routines)
├── solutions/
│   ├── wdm_awg/ (GDS, simulation .mat, mask layout)
│   ├── modulators/ (electrical and optical s-params)
│   └── sensing/ (ring resonator biosensor design)
└── scripts/
    ├── link_to_klayout/ (Python API for layout generation)
    └── link_to_lumerical/ (Lumerical .lms project templates)

This structure allows a user to unzip and immediately have a working environment, provided they have standard tools (Python 3.9+, Klayout, and an FDTD solver).